Merge pull request #72 from Michatec/renovate/freedroidwarn

fix(deps): update dependency com.github.woheller69:freedroidwarn to v1.13

.github/workflows/gradle-publish.yml

@@ -3,13 +3,18 @@ name: Build and publish APK
 on:
   workflow_dispatch:
   push:
-    tags:
-      - 'b*'
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+    
+permissions:
+  contents: write
 
 env:
   ANDROID_HOME: /usr/local/lib/android/sdk/
-  APK_PATH: app/build/outputs/apk/release/Radio.apk
+  APK_PATH: app/build/outputs/apk/release/app-release-unsigned.apk
   APKSIGNER: /usr/local/lib/android/sdk/build-tools/34.0.0/apksigner
+  ZIPALIGN: /usr/local/lib/android/sdk/build-tools/34.0.0/zipalign
 
 jobs:
   build:
@@ -27,20 +32,24 @@ jobs:
           distribution: adopt
           cache: gradle
 
+      - name: Extract Build Metadata
+        id: meta
+        run: |
+          # Extract Version Name
+          VERSION_NAME=$(grep "versionName =" app/build.gradle.kts | awk -F\" '{print $2}')
+          echo "Found Version Name: $VERSION_NAME"
+          echo "VERSION_NAME=$VERSION_NAME" >> $GITHUB_ENV
+
       - name: Cache Android SDK
-        #id: cache-android-sdk
         uses: actions/cache@v5
         with:
           path: ${{ env.ANDROID_HOME }}
           key: ${{ runner.os }}-android-sdk
 
       - name: Setup Android SDK
-        ## It is not necessary to check for cache hit as it
-        ## will not download Android SDK again
-        #if: steps.cache-android-sdk.outputs.cache-hit != 'true'
-        uses: android-actions/setup-android@v3
+        uses: android-actions/setup-android@v4
         with:
-          packages: ''
+          packages: 'ndk;29.0.14206865'
 
       - name: Grant execute permission for gradlew
         run: chmod +x ./gradlew
@@ -53,7 +62,7 @@ jobs:
 
       - name: Zipalign APK
         run: |
-          /usr/local/lib/android/sdk/build-tools/34.0.0/zipalign -v -p 4 ${{ env.APK_PATH }} app-release-aligned.apk
+          ${{ env.ZIPALIGN }} -v -p 4 ${{ env.APK_PATH }} app-release-aligned.apk
 
       - name: Sign APK
         env:
@@ -64,10 +73,10 @@ jobs:
           echo "$SIGN_KEY" | base64 -d > key.der
           ${{ env.APKSIGNER }} sign --key key.der --cert cert.der app-release-aligned.apk
           rm cert.der key.der
-          mv app-release-aligned.apk app-release.apk
+          mv app-release-aligned.apk Radio_${{ env.VERSION_NAME }}-release.apk
 
       - name: Upload artifact
         uses: actions/upload-artifact@v7
         with:
-          name: app-release
-          path: app-release.apk
+          name: Radio
+          path: Radio_${{ env.VERSION_NAME }}-release.apk

.gitignore

@@ -4,4 +4,7 @@
 /local.properties
 /.idea
 /build
-/captures
+/captures
+/gradle/gradle-daemon-jvm.properties
+/.kotlin
+/app/.cxx/

.vscode/c_cpp_properties.json

@@ -0,0 +1,16 @@
+{
+    "configurations": [
+        {
+            "name": "Android",
+            "includePath": [
+                "${workspaceFolder}/**"
+            ],
+            "defines": [
+                "_DEBUG",
+                "UNICODE",
+                "_UNICODE"
+            ]
+        }
+    ],
+    "version": 4
+}

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+    "C_Cpp.default.compilerPath": "",
+    "java.configuration.updateBuildConfiguration": "interactive"
+}

LICENSE.md

@@ -1,23 +1,678 @@
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+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,15 +1,35 @@
+<p align="center">
+	<a href="https://github.com/michatec/Radio/releases"><img src="https://img.shields.io/github/v/release/michatec/Radio?style=flat-square&include_prereleases&label=version" /></a>
+	<a href="https://github.com/michatec/Radio/releases"><img src="https://img.shields.io/github/downloads/michatec/Radio/total.svg?style=flat-square" /></a>
+	<a href="https://github.com/michatec/Radio/issues"><img src="https://img.shields.io/github/issues-raw/michatec/Radio.svg?style=flat-square&label=issues" /></a>
+	<a href="https://github.com/michatec/Radio/graphs/contributors"><img src="https://img.shields.io/github/contributors/michatec/Radio?style=flat-square" /></a>
+</p>
 <div align="center">
 
 ### ℹ️ About Radio
 **Radio is an application with a minimalist approach to listening to radio over the Internet.** <br>
 **Radio only offers a very basic search option, and it imports audio streaming links when you tap them in a web browser.** <br>
+**Radio now also supports Android TV (Beta) and Cast to Devices (Beta) with the Version 14.5 and above.** <br>
 **Pull request are welcome at any time.**<br>
 
-**Radio is free software. It is released under the [MIT open source license](https://opensource.org/licenses/MIT).**
+**Radio is free software. It is released under the [GPLv3 open source license](https://opensource.org/licenses/GPL-3.0).**
 </div>
 
 ----------------------------------------
 
+<details>
+<summary>❗Warning</summary>
+<br>
+<p>
+Google has announced that, starting in 2026/2027, all apps on certified Android devices will require the developer to submit personal identity details directly to Google.
+
+Since the developers of this app do not agree to this requirement, this app will no longer work on certified Android devices after that time.
+</p>
+<a href="https://github.com/woheller69/FreeDroidWarn">ℹ️ More Information</a>
+</details>
+
+----------------------------------------
+
 <details>
 <summary>⚙️ Install Radio</summary>
 <br>
@@ -57,10 +77,32 @@ You can help out the radio-browser.info community by [adding the missing station
 
 ----------------------------------------
 
+<details>
+<summary>📺 Android TV Controls</summary>
+<br>
+
+When **Edit Stations** is enabled:
+- Press **← (Left)** on the remote to open the detailed station editing area
+- Press **3** or **Back** to close the editing area
+
+**General TV** Controls:
+- Press **0** or **DEL** to remove the selected radio station
+- Press **1** or **SPACE** to make the selected radio station favourite
+- Press **2** or **PLUS** to reorder the selected radio station
+
+</details>
+
+----------------------------------------
+
 <details>
 <summary>📜️ Credit</summary>
 
-Base app Michatec & [TRANSISTOR](https://codeberg.org/y20k/transistor).
+- [Radio Browser](http://www.radio-browser.info/) for providing the radio station database
+- [AndroidX Leanback](https://developer.android.com/jetpack/androidx/releases/leanback) for providing the Android TV UI components
+
+- Michatec for developing the app and maintaining the project
+- All the contributors who have contributed to the project by submitting pull requests, reporting issues, or providing feedback
+
 </details>
 
 <div align="right">

SECURITY.md

@@ -0,0 +1,59 @@
+# Security Policy
+
+## Reporting a Vulnerability
+
+We take the security of Radio seriously. If you believe you have found a security vulnerability, please report it via **GitHub Issues** before disclosing it publicly.
+
+**Create a new security issue**: [GitHub Issues — Security](https://github.com/michatec/Radio/issues/new?labels=security). We will respond within 48 hours acknowledging your report and work with you to understand and address the issue.
+
+Include in your report:
+- Description of the vulnerability
+- Steps to reproduce
+- Affected versions (if known)
+- Potential impact
+- Any suggested fixes (optional)
+
+We appreciate responsible disclosure and will credit researchers who report valid security issues (unless you prefer to remain anonymous).
+
+## Supported Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 14.5    | :white_check_mark: |
+| < 14.5  | :x:                |
+
+Only the latest stable release receives security updates. Users on older versions are encouraged to update.
+
+## Security Considerations
+
+### Network Security
+Radio streams audio over the internet and connects to the [radio-browser.info](https://www.radio-browser.info/) API for station search. The app allows cleartext HTTP traffic for radio stream compatibility (required for many legacy radio stations).
+
+### Data Collection
+- **Station data** (names, images, stream URLs) is fetched from radio-browser.info's public API
+- **Station lists** are stored locally on the device only
+- **No personal data** is collected or transmitted to michatec servers
+- **Usage data** is not collected
+
+### Permissions
+Radio requests only the permissions necessary for core functionality:
+- `INTERNET` — stream radio and fetch station metadata
+- `ACCESS_NETWORK_STATE` — detect connectivity changes
+- `FOREGROUND_SERVICE_MEDIA_PLAYBACK` — maintain playback when app is backgrounded
+- `WAKE_LOCK` — prevent device from sleeping during playback
+
+### Third-Party Dependencies
+Radio uses several third-party libraries. Security issues in dependencies are monitored via Renovate bot for updates. Key dependencies include:
+- AndroidX Media3 / ExoPlayer (media playback)
+- Google Cast SDK (Chromecast support)
+- Volley (HTTP requests)
+
+### File Handling
+The app can import M3U/PLS playlist files from external sources. Files are processed locally and stream URLs are validated before playback. Station images are downloaded from radio-browser.info and cached locally.
+
+## Security Update Process
+Security patches are delivered via normal app update channels (GitHub Releases, automated update notifications). Critical vulnerabilities may trigger an out-of-band security update.
+
+## Contacts
+- General issues: [GitHub Issues](https://github.com/michatec/Radio/issues)
+- Project maintainer: [@michatec](https://github.com/michatec)

app/build.gradle

@@ -1,78 +0,0 @@
-plugins {
-    id 'com.android.application'
-    id 'kotlin-parcelize'
-}
-
-androidComponents {
-    onVariants(selector().all()) { variant ->
-        variant.outputs.forEach { output ->
-            output.outputFileName.set("Radio.apk")
-        }
-    }
-}
-
-android {
-    namespace 'com.michatec.radio'
-    compileSdk 36
-
-    defaultConfig {
-        applicationId 'com.michatec.radio'
-        minSdk 28
-        targetSdk 36
-        versionCode 141
-        versionName '14.1'
-        resourceConfigurations += ['en', 'de', 'el', 'nl', 'pl', 'ru','uk', 'ja', 'da', 'fr']
-    }
-
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_17
-        targetCompatibility JavaVersion.VERSION_17
-    }
-
-    buildFeatures {
-        buildConfig true
-    }
-
-    buildTypes {
-        debug {
-            minifyEnabled false
-            shrinkResources false
-            crunchPngs false
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-            applicationIdSuffix = ".debug"
-        }	
-	
-        release {
-            minifyEnabled true
-            shrinkResources true
-            crunchPngs true
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-        }
-    }
-}
-
-dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
-
-    // Google Stuff //
-    implementation 'com.google.android.material:material:1.13.0'
-    implementation 'com.google.code.gson:gson:2.13.2'
-
-    // AndroidX Stuff //
-    implementation 'androidx.core:core-ktx:1.17.0'
-    implementation 'androidx.activity:activity-ktx:1.12.4'
-    implementation 'androidx.palette:palette-ktx:1.0.0'
-    implementation 'androidx.preference:preference-ktx:1.2.1'
-    implementation 'androidx.media:media:1.7.1'
-    implementation 'androidx.media3:media3-exoplayer:1.9.2'
-    implementation 'androidx.media3:media3-exoplayer-hls:1.9.2'
-    implementation 'androidx.media3:media3-session:1.9.2'
-    implementation 'androidx.media3:media3-datasource-okhttp:1.9.2'
-    implementation 'androidx.navigation:navigation-fragment-ktx:2.9.7'
-    implementation 'androidx.navigation:navigation-ui-ktx:2.9.7'
-    implementation 'androidx.work:work-runtime-ktx:2.11.1'
-
-    // Volley HTTP request //
-    implementation 'com.android.volley:volley:1.2.1'
-    implementation 'androidx.compose.material3:material3:1.4.0'
-}

app/build.gradle.kts

@@ -0,0 +1,81 @@
+plugins {
+    alias(libs.plugins.android.application)
+    id("kotlin-parcelize")
+}
+
+android {
+    namespace = "com.michatec.radio"
+    compileSdk = 37
+
+    defaultConfig {
+        applicationId = "com.michatec.radio"
+        minSdk = 28
+        targetSdk = 37
+        versionCode = 146
+        versionName = "14.6"
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    buildFeatures {
+        buildConfig = true
+    }
+
+    buildTypes {
+        debug {
+            isMinifyEnabled = false
+            isShrinkResources = false
+            isCrunchPngs = false
+            proguardFiles.addAll(listOf(getDefaultProguardFile("proguard-android-optimize.txt"), file("proguard-rules.pro")))
+            applicationIdSuffix = ".debug"
+        }
+
+        release {
+            isMinifyEnabled = true
+            isShrinkResources = true
+            isCrunchPngs = true
+            proguardFiles.addAll(listOf(getDefaultProguardFile("proguard-android-optimize.txt"), file("proguard-rules.pro")))
+        }
+    }
+
+    ndkVersion = "29.0.14206865"
+
+    externalNativeBuild {
+        cmake {
+            path = file("src/main/cpp/CMakeLists.txt")
+            version = "3.22.1"
+        }
+    }
+}
+
+dependencies {
+    // Google Stuff //
+    implementation(libs.material)
+    implementation(libs.gson)
+    implementation(libs.play.services.cast.framework)
+
+    // AndroidX Stuff //
+    implementation(libs.core.ktx)
+    implementation(libs.activity.ktx)
+    implementation(libs.palette.ktx)
+    implementation(libs.preference.ktx)
+    implementation(libs.media)
+    implementation(libs.media3.exoplayer)
+    implementation(libs.media3.exoplayer.hls)
+    implementation(libs.media3.session)
+    implementation(libs.media3.cast)
+    implementation(libs.media3.datasource.okhttp)
+    implementation(libs.navigation.fragment.ktx)
+    implementation(libs.navigation.ui.ktx)
+    implementation(libs.work.runtime.ktx)
+    implementation(libs.leanback)
+
+    implementation(libs.freedroidwarn)
+
+    // Volley HTTP request //
+    implementation(libs.volley)
+    implementation(libs.material3)
+}

app/proguard-rules.pro

@@ -1,6 +1,6 @@
 # Add project specific ProGuard rules here.
 # You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.
+# proguardFiles setting in build.gradle.kts.
 #
 # For more details, see
 #   http://developer.android.com/guide/developing/tools/proguard.html

app/src/main/AndroidManifest.xml

@@ -1,6 +1,13 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-feature
+        android:name="android.software.leanback"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.touchscreen"
+        android:required="false" />
+
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
@@ -10,6 +17,7 @@
     <application
         android:name=".Radio"
         android:allowBackup="true"
+        android:banner="@mipmap/ic_banner"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
         android:icon="@mipmap/ic_launcher"
@@ -21,10 +29,9 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         android:usesCleartextTraffic="true"
-        tools:targetApi="tiramisu">
+        tools:targetApi="33">
 
         <!-- ANDROID AUTO SUPPORT -->
-        <!--  https://developer.android.com/training/auto/audio/ -->
         <meta-data
             android:name="com.google.android.gms.car.application"
             android:resource="@xml/automotive_app_desc" />
@@ -32,57 +39,61 @@
             android:name="com.google.android.gms.car.notification.SmallIcon"
             android:resource="@mipmap/ic_launcher" />
 
-        <!-- Main activity for radio station playback on phone -->
+        <!-- GOOGLE CAST SUPPORT -->
+        <receiver android:name="androidx.mediarouter.media.MediaTransferReceiver" />
+        <meta-data
+            android:name="com.google.android.gms.cast.framework.OPTIONS_PROVIDER_CLASS_NAME"
+            android:value="com.michatec.radio.CastOptionsProvider" />
+
+        <activity
+            android:name=".ExpandedControllerActivity"
+            android:exported="false"
+            android:theme="@style/CustomCastExpandedControllerStyle"
+            android:launchMode="singleTask" />
+
+        <!-- Main activity for radio station playback on phone and TV -->
         <activity
             android:name=".MainActivity"
             android:configChanges="orientation|screenSize"
             android:windowSoftInputMode="adjustPan"
+            android:theme="@style/SplashTheme"
             android:exported="true">
 
-            <!-- react to main intents -->
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
             </intent-filter>
 
-            <!-- react to be recognized as a music player -->
             <intent-filter>
                 <action android:name="android.intent.action.MUSIC_PLAYER" />
                 <category android:name="android.intent.category.CATEGORY_APP_MUSIC" />
             </intent-filter>
 
-            <!-- react to voice searches, like "Play Security Now" -->
             <intent-filter>
                 <action android:name="android.media.action.MEDIA_PLAY_FROM_SEARCH" />
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
 
-            <!-- react to playlist-links based on file extension -->
             <intent-filter android:autoVerify="true">
                 <action android:name="android.intent.action.VIEW" />
-
                 <category android:name="android.intent.category.BROWSABLE" />
                 <category android:name="android.intent.category.DEFAULT" />
-
                 <data android:scheme="http" />
                 <data android:scheme="https" />
-                <data android:host="*" />
+                <data android:host="*" tools:ignore="AppLinkUrlError" />
                 <data android:pathPattern=".*\\.m3u" />
                 <data android:pathPattern=".*\\.m3u8" />
                 <data android:pathPattern=".*\\.pls" />
             </intent-filter>
 
-            <!-- react to playlist-links based on mimetype -->
-            <intent-filter android:autoVerify="true">
+            <intent-filter android:autoVerify="false">
                 <action android:name="android.intent.action.VIEW" />
-
                 <category android:name="android.intent.category.BROWSABLE" />
                 <category android:name="android.intent.category.DEFAULT" />
-
                 <data android:scheme="http" />
                 <data android:scheme="https" />
-                <data android:host="*"
-                    tools:ignore="AppLinkUrlError" />
+                <data android:host="*" tools:ignore="AppLinkUrlError" />
                 <data android:mimeType="audio/x-scpls" />
                 <data android:mimeType="audio/mpegurl" />
                 <data android:mimeType="audio/x-mpegurl" />
@@ -93,11 +104,9 @@
                 <data android:mimeType="application/octet-stream" />
             </intent-filter>
 
-            <!-- react to hls playlist-links based on mimetype -->
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
                 <category android:name="android.intent.category.DEFAULT" />
-
                 <data android:scheme="content" />
                 <data android:host="*" />
                 <data android:mimeType="audio/x-scpls" />
@@ -109,20 +118,16 @@
                 <data android:mimeType="application/vnd.apple.mpegurl.audio" />
             </intent-filter>
 
-            <!-- react to "start player service" intents -->
             <intent-filter>
                 <action android:name="com.michatec.radio.action.START_PLAYER_SERVICE" />
             </intent-filter>
 
-            <!-- App Shortcuts -->
             <meta-data
                 android:name="android.app.shortcuts"
                 android:resource="@xml/shortcuts" />
 
         </activity>
 
-
-        <!-- Player Service -->
         <service
             android:name=".PlayerService"
             android:enabled="true"
@@ -132,12 +137,11 @@
             <intent-filter>
                 <action android:name="androidx.media3.session.MediaSessionService" />
                 <action android:name="android.media.browse.MediaBrowserService" />
+                <action android:name="android.intent.action.MEDIA_BUTTON" />
                 <action android:name="com.michatec.radio.action.START_PLAYER_SERVICE" />
             </intent-filter>
         </service>
 
-
-        <!-- handles completed downloads -->
         <receiver
             android:name=".helpers.DownloadFinishedReceiver"
             android:exported="true">
@@ -146,18 +150,6 @@
             </intent-filter>
         </receiver>
 
-
-        <!-- handles media buttons -->
-        <receiver
-            android:name="androidx.media.session.MediaButtonReceiver"
-            android:exported="true">
-            <intent-filter>
-                <action android:name="android.intent.action.MEDIA_BUTTON" />
-            </intent-filter>
-        </receiver>
-
-
-        <!-- file provider -->
         <provider
             android:name="androidx.core.content.FileProvider"
             android:authorities="${applicationId}.provider"

app/src/main/cpp/CMakeLists.txt

@@ -0,0 +1,42 @@
+
+# For more information about using CMake with Android Studio, read the
+# documentation: https://d.android.com/studio/projects/add-native-code.html.
+# For more examples on how to use CMake, see https://github.com/android/ndk-samples.
+
+# Sets the minimum CMake version required for this project.
+cmake_minimum_required(VERSION 3.22.1)
+
+# Declares the project name. The project name can be accessed via ${ PROJECT_NAME},
+# Since this is the top level CMakeLists.txt, the project name is also accessible
+# with ${CMAKE_PROJECT_NAME} (both CMake variables are in-sync within the top level
+# build script scope).
+project("radio")
+
+# Creates and names a library, sets it as either STATIC
+# or SHARED, and provides the relative paths to its source code.
+# You can define multiple libraries, and CMake builds them for you.
+# Gradle automatically packages shared libraries with your APK.
+#
+# In this top level CMakeLists.txt, ${CMAKE_PROJECT_NAME} is used to define
+# the target library name; in the sub-module's CMakeLists.txt, the project name
+# is preferred for the same purpose.
+#
+# In order to load a library into your app from Java/Kotlin, you must call
+# System.loadLibrary() and pass the name of the library defined here;
+# for GameActivity/NativeActivity derived applications, the same library name must be
+# used in the AndroidManifest.xml file.
+add_library(dsp SHARED
+    dsp.cpp)
+
+add_library(extra SHARED
+    extra.cpp)
+
+# Specifies libraries CMake should link to your target library. You
+# can link libraries from various origins, such as libraries defined in this
+# build script, prebuilt third-party libraries, or Android system libraries.
+target_link_libraries(dsp
+    android
+    log)
+target_link_libraries(extra
+    android
+    log)

app/src/main/cpp/dsp.cpp

@@ -0,0 +1,458 @@
+#include <jni.h>
+#include <vector>
+#include <cmath>
+#include <complex>
+#include <array>
+#include <atomic>
+
+#if defined(__ARM_NEON)
+#include <arm_neon.h>
+#endif
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+static std::atomic<float> gSampleRate(44100.0f);
+static constexpr int FFT_SIZE = 2048;
+static constexpr int NUM_EQ_BANDS = 10;
+static constexpr float INV_32768 = 1.0f / 32768.0f;
+static constexpr float SQRT_2_INV = 0.70710678f;
+static constexpr float DENORMAL_OFFSET = 1e-18f;
+static constexpr float INTERPOLATION_SPEED = 0.5f;
+
+static constexpr std::array<float, NUM_EQ_BANDS> EQ_FREQUENCIES = {
+        31.25f, 62.5f, 125.0f, 250.0f, 500.0f,
+        1000.0f, 2000.0f, 4000.0f, 8000.0f, 16000.0f
+};
+
+struct alignas(16) EqBandInterpolator {
+    std::atomic<float> targetGain{0.0f};
+    std::atomic<float> currentGain{0.0f};
+    float a0 = 1.0f, a1 = 0.0f, a2 = 0.0f, b1 = 0.0f, b2 = 0.0f;
+    float z1 = 0.0f, z2 = 0.0f;
+    bool active = false;
+
+    inline void setTargetGain(float g) { targetGain.store(g, std::memory_order_release); }
+    
+    inline void updateInterpolation() {
+        float target = targetGain.load(std::memory_order_acquire);
+        float current = currentGain.load(std::memory_order_relaxed);
+        float diff = target - current;
+        if (std::abs(diff) > 0.001f) {
+            currentGain.store(current + diff * INTERPOLATION_SPEED, std::memory_order_release);
+        }
+    }
+    
+    inline float process(float x) {
+        if (!active) return x;
+        updateInterpolation();
+        float y = x * a0 + z1;
+        z1 = x * a1 + z2 - b1 * y + DENORMAL_OFFSET;
+        z2 = x * a2 - b2 * y;
+        return y;
+    }
+    
+    inline void setCoefficients(float sr, float f, float g, float bw) {
+        active = true;
+        const float A = powf(10.0f, g / 60.0f);
+        const float w = 2.0f * static_cast<float>(M_PI) * f / sr;
+        const float alpha = sinf(w) * sinhf(logf(2.0f) / 2.0f * bw * w / sinf(w));
+        const float c = cosf(w);
+        const float a0_raw = 1.0f + alpha / A;
+        const float invA0 = 1.0f / a0_raw;
+        a0 = (1.0f + alpha * A) * invA0;
+        a1 = (-2.0f * c) * invA0;
+        a2 = (1.0f - alpha * A) * invA0;
+        b1 = (-2.0f * c) * invA0;
+        b2 = (1.0f - alpha / A) * invA0;
+    }
+};
+
+struct alignas(16) BassFilter {
+    alignas(16) float a0 = 1.2f, a1 = 1.2f, a2 = 1.2f, b1 = 0.0f, b2 = 0.0f;
+    alignas(16) float z1 = 0.0f, z2 = 0.0f;
+    std::atomic<bool> active{false};
+    std::atomic<float> targetGain{0.0f};
+    std::atomic<float> currentGain{0.0f};
+
+    inline void updateInterpolation() {
+        float target = targetGain.load(std::memory_order_acquire);
+        float current = currentGain.load(std::memory_order_relaxed);
+        float diff = target - current;
+        if (std::abs(diff) > 0.001f) {
+            currentGain.store(current + diff * INTERPOLATION_SPEED, std::memory_order_release);
+        }
+    }
+
+    inline float process(float x) {
+        if (!active.load(std::memory_order_acquire)) return x;
+        updateInterpolation();
+        float y = x * a0 + z1;
+        z1 = x * a1 + z2 - b1 * y + DENORMAL_OFFSET;
+        z2 = x * a2 - b2 * y;
+        if(y > 1.2f) y = 1.2f; else if(y < -1.2f) y = -1.2f;
+        return y;
+    }
+
+    void setCoefficients(float sr, float f, float g, float q){
+        float A=powf(10.0f,g/60.0f);
+        float w=2.0f*static_cast<float>(M_PI)*f/sr;
+        float alpha=sinf(w)/2.0f*sqrtf((A+1.0f/A)*(1.0f/q-1.0f)+2.0f);
+        float c=cosf(w),sqrtA=sqrtf(A);
+        float a0_raw=(A+1.0f)+(A-1.0f)*c+2.0f*sqrtA*alpha;
+        float invA0=1.0f/a0_raw;
+        a0=A*((A+1.0f)-(A-1.0f)*c+2.0f*sqrtA*alpha)*invA0;
+        a1=2.0f*A*((A-1.0f)-(A+1.0f)*c)*invA0;
+        a2=A*((A+1.0f)-(A-1.0f)*c-2.0f*sqrtA*alpha)*invA0;
+        b1=-2.0f*((A-1.0f)+(A+1.0f)*c)*invA0;
+        b2=((A+1.0f)+(A-1.0f)*c-2.0f*sqrtA*alpha)*invA0;
+    }
+    
+    void applyGain(float sr) {
+        float g = currentGain.load(std::memory_order_acquire);
+        setCoefficients(sr, 150.0f, g, SQRT_2_INV);
+    }
+};
+
+class ReverbOptimized {
+    struct DelayLine {
+        float buffer[48000]{};
+        int size = 48000;
+        int pos = 0;
+
+        inline float read(float delaySamples) {
+            float readPos = static_cast<float>(pos) - delaySamples;
+            if (readPos < 0.0f) readPos += static_cast<float>(size);
+
+            int i1 = static_cast<int>(readPos);
+            int i2 = (i1 + 1) % size;
+            float frac = readPos - static_cast<float>(i1);
+
+            return buffer[i1] * (1.0f - frac) + buffer[i2] * frac;
+        }
+
+        inline void write(float x) {
+            buffer[pos] = x;
+            pos++;
+            if (pos >= size) pos = 0;
+        }
+    };
+
+    DelayLine delays[8];
+
+    float feedback[8] = {
+            0.78f, 0.80f, 0.82f, 0.84f,
+            0.76f, 0.79f, 0.81f, 0.83f
+    };
+
+    float baseDelay[8] = {
+            1423.0f, 1557.0f, 1617.0f, 1789.0f,
+            1867.0f, 1999.0f, 2137.0f, 2251.0f
+    };
+
+    float modPhase[8] = {};
+    float modSpeed[8] = {
+            0.10f, 0.12f, 0.09f, 0.11f,
+            0.13f, 0.08f, 0.14f, 0.07f
+    };
+
+public:
+    std::atomic<float> mix{0.0f};
+
+    inline float processSample(float x) {
+        float m = mix.load(std::memory_order_relaxed);
+        if (m < 0.01f) return x;
+        float out = 0.0f;
+
+#pragma GCC unroll 8
+        for (int i = 0; i < 8; i++) {
+            modPhase[i] += modSpeed[i];
+            if (modPhase[i] > 2.0f * static_cast<float>(M_PI)) modPhase[i] -= 2.0f * static_cast<float>(M_PI);
+
+            float mod = sinf(modPhase[i]) * 5.0f;
+
+            float delayTime = baseDelay[i] + mod;
+
+            float delayed = delays[i].read(delayTime);
+
+            float input = x + delayed * feedback[i] + DENORMAL_OFFSET;
+
+            delays[i].write(input);
+
+            out += delayed;
+        }
+
+        return x * (1.0f - m) + (out * 0.125f) * m;
+    }
+
+    inline void processBlock(float* __restrict__ left, float* __restrict__ right, int count) {
+        float m = mix.load(std::memory_order_relaxed);
+        if (m < 0.01f) return;
+
+        for (int i = 0; i < count; i++) {
+            float l = processSample(left[i]);
+            float r = processSample(right[i]);
+
+            float wetL = l * 0.7f + r * 0.3f;
+            float wetR = r * 0.7f + l * 0.3f;
+
+            left[i] = wetL;
+            right[i] = wetR;
+        }
+    }
+};
+
+class CompressorOptimized {
+public:
+    std::atomic<float> threshold{0.3f}, ratio{4.0f}, attack{0.08f}, release{0.8f};
+    std::atomic<float> sampleRate{44100.0f};
+    std::atomic<bool> enabled{false};
+private:
+    float envelopeL = 0.0f, envelopeR = 0.0f;
+    float attackCoef = 0.0f, releaseCoef = 0.0f;
+public:
+    inline void updateCoefficients() {
+        float a = attack.load(std::memory_order_relaxed);
+        float r = release.load(std::memory_order_relaxed);
+        float sr = sampleRate.load(std::memory_order_relaxed);
+
+        attackCoef = expf(-1.0f / (a * sr));
+        releaseCoef = expf(-1.0f / (r * sr));
+    }
+    inline void processBlock(float* __restrict__ buffer, int count, float& envelope) {
+        updateCoefficients();
+        float th = threshold.load(std::memory_order_acquire);
+        float rt = ratio.load(std::memory_order_acquire);
+        for(int i=0; i<count; i++){
+            float absInput = fabsf(buffer[i]);
+            envelope = (absInput > envelope) ? attackCoef*envelope + (1.0f-attackCoef)*absInput : releaseCoef*envelope + (1.0f-releaseCoef)*absInput;
+            float gain = (envelope>th)? (th + (envelope-th)/rt)/(envelope+1e-9f) : 1.0f;
+            buffer[i]*=gain;
+        }
+    }
+    inline void process(float* __restrict__ left, float* __restrict__ right, int count) {
+        if (!enabled.load(std::memory_order_acquire)) return;
+        processBlock(left, count, envelopeL);
+        processBlock(right, count, envelopeR);
+    }
+};
+
+static std::atomic<float> gStereoWidth{1.0f};
+alignas(16) std::array<float, 4096> gLeftBuf, gRightBuf;
+alignas(16) std::array<float, 256> gFFTData;
+
+inline void fastFFT(std::complex<float>* __restrict__ data, int n) {
+    for (int i = 1, j = 0; i < n; i++) {
+        int bit = n >> 1;
+        for (; j & bit; bit >>= 1) j ^= bit;
+        j ^= bit;
+        if (i < j) std::swap(data[i], data[j]);
+    }
+    for (int len = 2; len <= n; len <<= 1) {
+        float ang = -2.0f * static_cast<float>(M_PI) / static_cast<float>(len);
+        std::complex<float> wlen(cosf(ang), sinf(ang));
+        for (int i = 0; i < n; i += len) {
+            std::complex<float> w(1.0f);
+            for (int j = 0; j < len / 2; j++) {
+                std::complex<float> u = data[i + j];
+                std::complex<float> v = data[i + j + len / 2] * w;
+                data[i + j] = u + v;
+                data[i + j + len / 2] = u - v;
+                w *= wlen;
+            }
+        }
+    }
+}
+
+inline void applyHannWindowToReal(std::complex<float>* __restrict__ data, int size) {
+    const auto fSizeMinus1 = static_cast<float>(size - 1);
+    for (int i = 0; i < size; i++) {
+        float window = 0.5f * (1.0f - cosf(2.0f * static_cast<float>(M_PI) * static_cast<float>(i) / fSizeMinus1));
+        data[i] = std::complex<float>(data[i].real() * window, data[i].imag());
+    }
+}
+
+inline float fastSoftClip(float x) {
+    float ax = fabsf(x);
+    float sign = x > 0.0f ? 1.0f : -1.0f;
+    if (ax > 1.0f) return sign;
+    return x * (1.5f - 0.5f * x * x);
+}
+
+static EqBandInterpolator gEqL[NUM_EQ_BANDS];
+static EqBandInterpolator gEqR[NUM_EQ_BANDS];
+static BassFilter gBassL, gBassR;
+static CompressorOptimized gCompressor;
+static ReverbOptimized gReverbL, gReverbR;
+static std::array<std::complex<float>, FFT_SIZE> gFFTWork;
+static int gEqUpdateCounter = 0;
+
+inline void updateAllEqBands() {
+    float sr = gSampleRate.load(std::memory_order_acquire);
+    for (int b = 0; b < NUM_EQ_BANDS; b++) {
+        float g = gEqL[b].targetGain.load(std::memory_order_acquire);
+        gEqL[b].setCoefficients(sr, EQ_FREQUENCIES[static_cast<size_t>(b)], g, 1.0f);
+        gEqR[b].setCoefficients(sr, EQ_FREQUENCIES[static_cast<size_t>(b)], g, 1.0f);
+    }
+}
+
+extern "C" {
+
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setSampleRate(JNIEnv*, jobject, jfloat sr) {
+    gSampleRate.store(sr, std::memory_order_release);
+    gCompressor.sampleRate.store(sr, std::memory_order_release);
+    gBassL.applyGain(sr);
+    gBassR.applyGain(sr);
+    gEqUpdateCounter = 1;
+}
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setDrcEnabled(JNIEnv*, jobject, jboolean e) {
+    gCompressor.enabled.store(e == JNI_TRUE, std::memory_order_release);
+}
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setReverbMix(JNIEnv*, jobject, jfloat m) {
+    gReverbL.mix.store(m, std::memory_order_release);
+    gReverbR.mix.store(m, std::memory_order_release);
+}
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setEqFull(JNIEnv* env, jobject thiz, jfloatArray gains) {
+    if (!gains) return;
+    
+    jsize len = env->GetArrayLength(gains);
+    int bandsToUpdate = std::min(static_cast<int>(len), NUM_EQ_BANDS);
+    
+    jfloat* gainsPtr = env->GetFloatArrayElements(gains, nullptr);
+    if (!gainsPtr) return;
+    
+    for (int b = 0; b < bandsToUpdate; b++) {
+        gEqL[b].setTargetGain(gainsPtr[b]);
+        gEqR[b].setTargetGain(gainsPtr[b]);
+    }
+    
+    gEqUpdateCounter = 1;
+    
+    env->ReleaseFloatArrayElements(gains, gainsPtr, JNI_ABORT);
+}
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setBassBoost(JNIEnv*, jobject, jfloat g) {
+    float scaledGain = g * 4.0f;
+    gBassL.targetGain.store(scaledGain, std::memory_order_release);
+    gBassR.targetGain.store(scaledGain, std::memory_order_release);
+    float sr = gSampleRate.load(std::memory_order_acquire);
+    gBassL.applyGain(sr);
+    gBassR.applyGain(sr);
+    if (std::abs(g) > 0.01f) {
+        gBassL.active.store(true, std::memory_order_release);
+        gBassR.active.store(true, std::memory_order_release);
+    } else {
+        gBassL.active.store(false, std::memory_order_release);
+        gBassR.active.store(false, std::memory_order_release);
+    }
+}
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setStereoWidth(JNIEnv*, jobject, jfloat w) {
+    gStereoWidth.store(fmaxf(0.0f, fminf(w, 2.0f)), std::memory_order_release);
+}
+
+JNIEXPORT jfloatArray JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_getFftData(JNIEnv* env, jobject) {
+    jfloatArray arr = env->NewFloatArray(256);
+    env->SetFloatArrayRegion(arr, 0, 256, gFFTData.data());
+    return arr;
+}
+
+inline void computeLogarithmicFFT(float* output, const std::complex<float>* input, int inputSize) {
+    float sr = gSampleRate.load(std::memory_order_acquire);
+    float binWidth = sr / (2.0f * static_cast<float>(inputSize));
+    constexpr int NUM_BANDS = 256;
+    constexpr float MIN_FREQ = 20.0f;
+    constexpr float MAX_FREQ = 20000.0f;
+    float logMin = logf(MIN_FREQ);
+    float logMax = logf(MAX_FREQ);
+    float logRange = logMax - logMin;
+    
+    for (int b = 0; b < NUM_BANDS; b++) {
+        float f1 = expf(logMin + (logRange * static_cast<float>(b) / static_cast<float>(NUM_BANDS)));
+        float f2 = expf(logMin + (logRange * static_cast<float>(b + 1) / static_cast<float>(NUM_BANDS)));
+        int idx1 = static_cast<int>(f1 / binWidth);
+        int idx2 = static_cast<int>(f2 / binWidth);
+        idx1 = std::max(0, std::min(idx1, inputSize - 1));
+        idx2 = std::max(0, std::min(idx2, inputSize - 1));
+        
+        float sum = 0.0f;
+        int count = idx2 - idx1 + 1;
+        for (int i = idx1; i <= idx2 && i < inputSize; i++) {
+            sum += std::abs(input[i]);
+        }
+        float avg = (count > 0) ? sum / static_cast<float>(count) : 0.0f;
+        output[b] = avg * 0.5f;
+    }
+}
+
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_processAudioDirect(JNIEnv* env, jobject, jobject byteBuffer, jint size) {
+    auto* buffer = static_cast<jshort*>(env->GetDirectBufferAddress(byteBuffer));
+    if (!buffer) return;
+    int numFrames = (size / 2) / 2;
+    if (numFrames > 4096) numFrames = 4096;
+
+    if (gEqUpdateCounter > 0) {
+        updateAllEqBands();
+        gEqUpdateCounter--;
+    }
+
+    for (int i = 0; i < numFrames; i++) {
+        gLeftBuf[static_cast<size_t>(i)] = static_cast<float>(buffer[i * 2]) * INV_32768;
+        gRightBuf[static_cast<size_t>(i)] = static_cast<float>(buffer[i * 2 + 1]) * INV_32768;
+    }
+
+    for (int i = 0; i < numFrames; i++) {
+        float xL = gLeftBuf[static_cast<size_t>(i)];
+        float xR = gRightBuf[static_cast<size_t>(i)];
+
+        for (int b = 0; b < NUM_EQ_BANDS; b++) {
+            xL = gEqL[b].process(xL);
+            xR = gEqR[b].process(xR);
+        }
+
+        gLeftBuf[static_cast<size_t>(i)] = xL;
+        gRightBuf[static_cast<size_t>(i)] = xR;
+    }
+
+    for(int i = 0; i < numFrames; i++) {
+        gLeftBuf[static_cast<size_t>(i)] = gBassL.process(gLeftBuf[static_cast<size_t>(i)]);
+        gRightBuf[static_cast<size_t>(i)] = gBassR.process(gRightBuf[static_cast<size_t>(i)]);
+    }
+
+    gReverbL.processBlock(gLeftBuf.data(), gRightBuf.data(), numFrames);
+
+    float stereoWidth = gStereoWidth.load(std::memory_order_relaxed);
+    if (stereoWidth != 1.0f) {
+        float halfWidth = stereoWidth * 0.5f;
+        for (int j = 0; j < numFrames; j++) {
+            float mid = (gLeftBuf[static_cast<size_t>(j)] + gRightBuf[static_cast<size_t>(j)]) * 0.5f;
+            float side = (gLeftBuf[static_cast<size_t>(j)] - gRightBuf[static_cast<size_t>(j)]) * halfWidth;
+            gLeftBuf[static_cast<size_t>(j)] = mid + side;
+            gRightBuf[static_cast<size_t>(j)] = mid - side;
+        }
+    }
+
+    gCompressor.process(gLeftBuf.data(), gRightBuf.data(), numFrames);
+
+    if (numFrames >= FFT_SIZE) {
+        for (int k = 0; k < FFT_SIZE; k++) {
+            gFFTWork[static_cast<size_t>(k)] = std::complex<float>(gLeftBuf[static_cast<size_t>(k)], 0.0f);
+        }
+    } else {
+        for (int k = 0; k < numFrames; k++) {
+            gFFTWork[static_cast<size_t>(k)] = std::complex<float>(gLeftBuf[static_cast<size_t>(k)], 0.0f);
+        }
+        for (int k = numFrames; k < FFT_SIZE; k++) {
+            gFFTWork[static_cast<size_t>(k)] = std::complex<float>(0.0f, 0.0f);
+        }
+    }
+    
+    applyHannWindowToReal(gFFTWork.data(), FFT_SIZE);
+    fastFFT(gFFTWork.data(), FFT_SIZE);
+    computeLogarithmicFFT(gFFTData.data(), gFFTWork.data(), FFT_SIZE / 2);
+
+    for (int k = 0; k < numFrames; k++) {
+        buffer[k * 2] = static_cast<jshort>(fastSoftClip(gLeftBuf[static_cast<size_t>(k)]) * 32767.0f);
+        buffer[k * 2 + 1] = static_cast<jshort>(fastSoftClip(gRightBuf[static_cast<size_t>(k)]) * 32767.0f);
+    }
+}
+}

app/src/main/cpp/extra.cpp

@@ -0,0 +1,86 @@
+#include <jni.h>
+#include <android/native_window_jni.h>
+#include <android/native_window.h>
+#include <android/log.h>
+#include <vector>
+#include <algorithm>
+#include <cmath>
+
+extern "C" {
+
+JNIEXPORT void JNICALL
+Java_com_michatec_radio_helpers_ExtrasHelper_visualize(JNIEnv *env, jclass clazz, jobject surface, jfloatArray data) {
+    if (!surface) return;
+    ANativeWindow* window = ANativeWindow_fromSurface(env, surface);
+    if (!window) return;
+
+    jsize len = env->GetArrayLength(data);
+    if (len == 0) {
+        ANativeWindow_release(window);
+        return;
+    }
+    jfloat* body = env->GetFloatArrayElements(data, nullptr);
+
+    ANativeWindow_Buffer buffer;
+    ANativeWindow_setBuffersGeometry(window, 0, 0, WINDOW_FORMAT_RGBA_8888);
+
+    if (ANativeWindow_lock(window, &buffer, nullptr) == 0) {
+        auto* pixels = static_cast<uint32_t*>(buffer.bits);
+
+        // Clear background (Dark Grey)
+        for (int y = 0; y < buffer.height; y++) {
+            uint32_t* row = pixels + (y * buffer.stride);
+            for (int x = 0; x < buffer.width; x++) {
+                row[x] = 0xFF121212;
+            }
+        }
+
+        // Draw bars - fewer bins = thicker bars
+        int displayBins = 40;
+        float barWidth = static_cast<float>(buffer.width) / static_cast<float>(displayBins);
+        int padding = static_cast<int>(barWidth * 0.2f);
+        if (padding < 1) padding = 1;
+
+        for (int i = 0; i < displayBins; i++) {
+            // Map display bin to data index
+            int dataIdx = (i * len) / displayBins;
+            float val = body[dataIdx];
+
+            // Use square root to compress the range (so peaks don't hit the top too easily)
+            // and a lower multiplier (0.4f) to reduce overall height
+            float scaledVal = sqrtf(val) * 0.5f;
+            int barHeight = static_cast<int>(scaledVal * static_cast<float>(buffer.height));
+
+            // Cap height at 75% to leave some room at the top
+            int maxH = static_cast<int>(static_cast<float>(buffer.height) * 0.75f);
+            if (barHeight > maxH) barHeight = maxH;
+            if (barHeight < 4) barHeight = 4; // Minimal visible line
+
+            int startX = static_cast<int>(static_cast<float>(i) * barWidth);
+            int endX = static_cast<int>(static_cast<float>(i + 1) * barWidth);
+
+            int drawStartX = startX + padding;
+            int drawEndX = endX - padding;
+            if (drawEndX <= drawStartX) drawEndX = drawStartX + 1;
+
+            int barBottom = buffer.height - 4; // Bottom margin
+            int barTop = barBottom - barHeight;
+
+            for (int x = drawStartX; x < drawEndX; x++) {
+                if (x < 0 || x >= buffer.width) continue;
+                for (int y = barTop; y < barBottom; y++) {
+                    if (y < 0 || y >= buffer.height) continue;
+                    // Using the same color, but now height is controlled
+                    pixels[y * buffer.stride + x] = 0xFFC5DA03;
+                }
+            }
+        }
+
+        ANativeWindow_unlockAndPost(window);
+    }
+
+    env->ReleaseFloatArrayElements(data, body, JNI_ABORT);
+    ANativeWindow_release(window);
+}
+
+} // extern "C"

app/src/main/java/com/michatec/radio/AddStationFragment.kt

@@ -0,0 +1,214 @@
+package com.michatec.radio
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.inputmethod.InputMethodManager
+import android.widget.Button
+import android.widget.EditText
+import android.widget.ProgressBar
+import androidx.appcompat.widget.SearchView
+import androidx.core.view.isGone
+import androidx.core.view.isVisible
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.ViewModelProvider
+import androidx.navigation.fragment.findNavController
+import androidx.recyclerview.widget.DefaultItemAnimator
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.textview.MaterialTextView
+import com.michatec.radio.collection.CollectionViewModel
+import com.michatec.radio.core.Station
+import com.michatec.radio.helpers.CollectionHelper
+import com.michatec.radio.helpers.NetworkHelper
+import com.michatec.radio.search.DirectInputCheck
+import com.michatec.radio.search.RadioBrowserResult
+import com.michatec.radio.search.RadioBrowserSearch
+import com.michatec.radio.search.SearchResultAdapter
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers.IO
+import kotlinx.coroutines.Dispatchers.Main
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
+class AddStationFragment : Fragment(),
+    SearchResultAdapter.SearchResultAdapterListener,
+    RadioBrowserSearch.RadioBrowserSearchListener,
+    DirectInputCheck.DirectInputCheckListener {
+
+    private lateinit var collectionViewModel: CollectionViewModel
+    private lateinit var stationSearchBoxView: SearchView
+    private lateinit var searchRequestProgressIndicator: ProgressBar
+    private lateinit var noSearchResultsTextView: MaterialTextView
+    private lateinit var stationSearchResultList: RecyclerView
+    private lateinit var positiveButton: Button
+    private lateinit var negativeButton: Button
+    private lateinit var searchResultAdapter: SearchResultAdapter
+    private lateinit var radioBrowserSearch: RadioBrowserSearch
+    private lateinit var directInputCheck: DirectInputCheck
+    private var station: Station = Station()
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        // We reuse the dialog layout as it's already optimized for TV in layout-television
+        val view = inflater.inflate(R.layout.dialog_find_station, container, false)
+        
+        collectionViewModel = ViewModelProvider(requireActivity())[CollectionViewModel::class.java]
+        radioBrowserSearch = RadioBrowserSearch(this)
+        directInputCheck = DirectInputCheck(this)
+
+        stationSearchBoxView = view.findViewById(R.id.station_search_box_view)
+        searchRequestProgressIndicator = view.findViewById(R.id.search_request_progress_indicator)
+        stationSearchResultList = view.findViewById(R.id.station_search_result_list)
+        noSearchResultsTextView = view.findViewById(R.id.no_results_text_view)
+        positiveButton = view.findViewById(R.id.dialog_positive_button)
+        negativeButton = view.findViewById(R.id.dialog_negative_button)
+
+        setupRecyclerView()
+        setupSearchView()
+
+        positiveButton.setOnClickListener {
+            addStationAndExit()
+        }
+
+        negativeButton.setOnClickListener {
+            searchResultAdapter.stopPrePlayback()
+            findNavController().navigateUp()
+        }
+
+        stationSearchBoxView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
+            override fun onQueryTextChange(query: String): Boolean {
+                handleSearch(query)
+                return true
+            }
+            override fun onQueryTextSubmit(query: String): Boolean {
+                handleSearch(query)
+                return true
+            }
+        })
+
+        return view
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        // Stop playback when fragment is destroyed (e.g. via back button)
+        if (this::searchResultAdapter.isInitialized) {
+            searchResultAdapter.stopPrePlayback()
+        }
+    }
+
+    private fun setupRecyclerView() {
+        searchResultAdapter = SearchResultAdapter(this, listOf())
+        stationSearchResultList.adapter = searchResultAdapter
+        stationSearchResultList.layoutManager = LinearLayoutManager(context)
+        stationSearchResultList.itemAnimator = DefaultItemAnimator()
+    }
+
+    private fun setupSearchView() {
+        // TV specific: ensure keyboard opens when search view gets focus
+        stationSearchBoxView.setOnQueryTextFocusChangeListener { v, hasFocus ->
+            if (hasFocus) {
+                // Find the internal EditText of the SearchView
+                val searchEditText = v.findViewById<EditText>(androidx.appcompat.R.id.search_src_text)
+                if (searchEditText != null) {
+                    searchEditText.requestFocus()
+                    val imm = requireContext().getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
+                    imm.showSoftInput(searchEditText, 0)
+                }
+            }
+        }
+
+        // Make the SearchView always expanded and ready for input
+        stationSearchBoxView.isIconified = false
+    }
+
+    private fun handleSearch(query: String) {
+        if (query.isEmpty()) {
+            resetLayout(true)
+            return
+        }
+        showProgressIndicator()
+        if (query.startsWith("http")) {
+            directInputCheck.checkStationAddress(requireContext(), query)
+        } else {
+            radioBrowserSearch.searchStation(requireContext(), query, Keys.SEARCH_TYPE_BY_KEYWORD)
+        }
+    }
+
+    private fun addStationAndExit() {
+        searchResultAdapter.stopPrePlayback()
+        val currentCollection = collectionViewModel.collectionLiveData.value ?: return
+        if (station.streamContent.isNotEmpty() && station.streamContent != Keys.MIME_TYPE_UNSUPPORTED) {
+            CollectionHelper.addStation(requireContext(), currentCollection, station)
+            findNavController().navigateUp()
+        } else {
+            CoroutineScope(IO).launch {
+                val contentType = NetworkHelper.detectContentType(station.getStreamUri())
+                station.streamContent = contentType.type
+                withContext(Main) {
+                    CollectionHelper.addStation(requireContext(), currentCollection, station)
+                    findNavController().navigateUp()
+                }
+            }
+        }
+    }
+
+    override fun onSearchResultTapped(result: Station) {
+        station = result
+        activateAddButton()
+    }
+
+    override fun activateAddButton() {
+        positiveButton.isEnabled = true
+    }
+
+    override fun deactivateAddButton() {
+        positiveButton.isEnabled = false
+    }
+
+    @SuppressLint("NotifyDataSetChanged")
+    override fun onRadioBrowserSearchResults(results: Array<RadioBrowserResult>) {
+        if (results.isNotEmpty()) {
+            searchResultAdapter.searchResults = results.map { it.toStation() }
+            searchResultAdapter.notifyDataSetChanged()
+            resetLayout(false)
+        } else {
+            showNoResultsError()
+        }
+    }
+
+    @SuppressLint("NotifyDataSetChanged")
+    override fun onDirectInputCheck(stationList: MutableList<Station>) {
+        if (stationList.isNotEmpty()) {
+            searchResultAdapter.searchResults = stationList
+            searchResultAdapter.notifyDataSetChanged()
+            resetLayout(false)
+        } else {
+            showNoResultsError()
+        }
+    }
+
+    private fun resetLayout(clear: Boolean) {
+        positiveButton.isEnabled = false
+        searchRequestProgressIndicator.isGone = true
+        noSearchResultsTextView.isGone = true
+        if (clear) searchResultAdapter.resetSelection(true)
+    }
+
+    private fun showProgressIndicator() {
+        searchRequestProgressIndicator.isVisible = true
+        noSearchResultsTextView.isGone = true
+    }
+
+    private fun showNoResultsError() {
+        searchRequestProgressIndicator.isGone = true
+        noSearchResultsTextView.isVisible = true
+    }
+}

app/src/main/java/com/michatec/radio/CastOptionsProvider.kt

@@ -0,0 +1,33 @@
+package com.michatec.radio
+
+import android.content.Context
+import com.google.android.gms.cast.CastMediaControlIntent
+import com.google.android.gms.cast.framework.CastOptions
+import com.google.android.gms.cast.framework.OptionsProvider
+import com.google.android.gms.cast.framework.SessionProvider
+import com.google.android.gms.cast.framework.media.CastMediaOptions
+import com.google.android.gms.cast.framework.media.NotificationOptions
+
+@Suppress("unused")
+class CastOptionsProvider : OptionsProvider {
+    override fun getCastOptions(context: Context): CastOptions {
+        val notificationOptions = NotificationOptions.Builder()
+            .setTargetActivityClassName(MainActivity::class.java.name)
+            .build()
+        val mediaOptions = CastMediaOptions.Builder()
+            .setNotificationOptions(notificationOptions)
+            .setExpandedControllerActivityClassName(ExpandedControllerActivity::class.java.name)
+            .build()
+
+        return CastOptions.Builder()
+            .setReceiverApplicationId(CastMediaControlIntent.DEFAULT_MEDIA_RECEIVER_APPLICATION_ID)
+            .setResumeSavedSession(true)
+            .setStopReceiverApplicationWhenEndingSession(true)
+            .setCastMediaOptions(mediaOptions)
+            .build()
+    }
+
+    override fun getAdditionalSessionProviders(context: Context): List<SessionProvider>? {
+        return null
+    }
+}

app/src/main/java/com/michatec/radio/EqualizerFragment.kt

@@ -0,0 +1,68 @@
+package com.michatec.radio
+
+import android.os.Bundle
+import android.view.View
+import androidx.appcompat.app.AppCompatActivity
+import androidx.preference.Preference
+import androidx.preference.PreferenceFragmentCompat
+import androidx.preference.SeekBarPreference
+import com.michatec.radio.helpers.PreferencesHelper
+
+/*
+ * EqualizerFragment class: Handles audio frequency settings with 10-band EQ
+ */
+class EqualizerFragment : PreferenceFragmentCompat() {
+
+    // EQ band frequencies matching radio.cpp
+    private val eqFrequencies = arrayOf("31 Hz", "62 Hz", "125 Hz", "250 Hz", "500 Hz", "1 kHz", "2 kHz", "4 kHz", "8 kHz", "16 kHz")
+    private val eqKeys = arrayOf(
+        Keys.PREF_EQ_LOW,           // Band 0: 31 Hz
+        Keys.PREF_EQ_BAND_1,        // Band 1: 62 Hz
+        Keys.PREF_EQ_BAND_2,        // Band 2: 125 Hz
+        Keys.PREF_EQ_BAND_3,        // Band 3: 250 Hz
+        Keys.PREF_EQ_BAND_4,        // Band 4: 500 Hz
+        Keys.PREF_EQ_BAND_5,        // Band 5: 1 kHz
+        Keys.PREF_EQ_MID,           // Band 6: 2 kHz
+        Keys.PREF_EQ_BAND_6,        // Band 7: 4 kHz
+        Keys.PREF_EQ_BAND_7,        // Band 8: 8 kHz
+        Keys.PREF_EQ_HIGH           // Band 9: 16 kHz
+    )
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        (activity as AppCompatActivity).supportActionBar?.title = getString(R.string.pref_equalizer_title)
+    }
+
+    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
+        val context = preferenceManager.context
+        val screen = preferenceManager.createPreferenceScreen(context)
+
+        // Reset Button
+        val resetPreference = Preference(context)
+        resetPreference.title = getString(R.string.pref_equalizer_reset_title)
+        resetPreference.setIcon(R.drawable.ic_refresh_24dp)
+        resetPreference.setOnPreferenceClickListener {
+            PreferencesHelper.resetEqualizer()
+            for (key in eqKeys) {
+                findPreference<SeekBarPreference>(key)?.value = 0
+            }
+            return@setOnPreferenceClickListener true
+        }
+        screen.addPreference(resetPreference)
+
+        // Create 10-band EQ
+        for (i in eqKeys.indices) {
+            val eqBand = SeekBarPreference(context)
+            eqBand.title = "Equalizer: ${eqFrequencies[i]}"
+            eqBand.key = eqKeys[i]
+            eqBand.setIcon(R.drawable.ic_music_note_24dp)
+            eqBand.min = -12
+            eqBand.max = 12
+            eqBand.showSeekBarValue = true
+            eqBand.setDefaultValue(0)
+            screen.addPreference(eqBand)
+        }
+
+        preferenceScreen = screen
+    }
+}

app/src/main/java/com/michatec/radio/ExpandedControllerActivity.kt

@@ -0,0 +1,40 @@
+package com.michatec.radio
+
+import android.content.Context
+import android.content.res.Configuration
+import android.view.Menu
+import com.google.android.gms.cast.framework.CastButtonFactory
+import com.google.android.gms.cast.framework.media.widget.ExpandedControllerActivity
+import com.michatec.radio.helpers.PreferencesHelper
+import java.util.Locale
+
+class ExpandedControllerActivity : ExpandedControllerActivity() {
+    override fun attachBaseContext(newBase: Context) {
+        val languageCode = PreferencesHelper.loadSelectedLanguage()
+        val context = if (languageCode.isEmpty() || languageCode == "system") {
+            // Use system default locale
+            newBase
+        } else {
+            val locale = Locale.forLanguageTag(languageCode)
+            val config = Configuration(newBase.resources.configuration)
+            config.setLocale(locale)
+            newBase.createConfigurationContext(config)
+        }
+        super.attachBaseContext(context)
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        super.onCreateOptionsMenu(menu)
+        menuInflater.inflate(R.menu.expanded_controller, menu)
+        CastButtonFactory.setUpMediaRouteButton(this, menu, R.id.media_route_menu_item)
+        return true
+    }
+
+    override fun onResume() {
+        try {
+            super.onResume()
+        } catch (_: ClassCastException) {
+            // Fix for lifecycle exception on some devices (e.g. Samsung)
+        }
+    }
+}

app/src/main/java/com/michatec/radio/Keys.kt

@@ -1,17 +1,3 @@
-/*
- * Keys.kt
- * Implements the keys used throughout the app
- * This object hosts all keys used to control Radio state
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import java.util.*
@@ -41,6 +27,7 @@ object Keys {
     const val EXTRA_START_LAST_PLAYED_STATION: String = "START_LAST_PLAYED_STATION"
     const val EXTRA_SLEEP_TIMER_REMAINING: String = "SLEEP_TIMER_REMAINING"
     const val EXTRA_METADATA_HISTORY: String = "METADATA_HISTORY"
+    const val EXTRA_VISUALIZER_DATA: String = "VISUALIZER_DATA"
 
     // arguments
     const val ARG_UPDATE_COLLECTION: String = "ArgUpdateCollection"
@@ -57,6 +44,7 @@ object Keys {
     const val CMD_PLAY_STREAM: String = "PLAY_STREAM"
     const val CMD_REQUEST_SLEEP_TIMER_REMAINING: String = "REQUEST_SLEEP_TIMER_REMAINING"
     const val CMD_REQUEST_METADATA_HISTORY: String = "REQUEST_METADATA_HISTORY"
+    const val CMD_GET_VISUALIZER_DATA: String = "GET_VISUALIZER_DATA"
 
     // preferences
     const val PREF_RADIO_BROWSER_API: String = "RADIO_BROWSER_API"
@@ -74,11 +62,40 @@ object Keys {
     const val PREF_LARGE_BUFFER_SIZE: String = "LARGE_BUFFER_SIZE"
     const val PREF_EDIT_STATIONS: String = "EDIT_STATIONS"
     const val PREF_EDIT_STREAMS_URIS: String = "EDIT_STREAMS_URIS"
+    const val PREF_BASS_BOOST: String = "BASS_BOOST"
+    const val PREF_REVERB: String = "REVERB"
+    const val PREF_DRC: String = "DRC"
+    const val PREF_EQ_LOW: String = "EQ_LOW"
+    const val PREF_EQ_MID: String = "EQ_MID"
+    const val PREF_EQ_HIGH: String = "EQ_HIGH"
+    const val PREF_EQUALIZER: String = "EQUALIZER_SETTINGS"
+    const val PREF_EQ_BAND_1: String = "EQ_BAND_1"
+    const val PREF_EQ_BAND_2: String = "EQ_BAND_2"
+    const val PREF_EQ_BAND_3: String = "EQ_BAND_3"
+    const val PREF_EQ_BAND_4: String = "EQ_BAND_4"
+    const val PREF_EQ_BAND_5: String = "EQ_BAND_5"
+    const val PREF_EQ_BAND_6: String = "EQ_BAND_6"
+    const val PREF_EQ_BAND_7: String = "EQ_BAND_7"
+    const val PREF_PRESET_SELECTED: String = "PRESET_SELECTED"
+    const val PREF_PRESET_EQ_BAND_0: String = "PRESET_EQ_BAND_0"
+    const val PREF_PRESET_EQ_BAND_1: String = "PRESET_EQ_BAND_1"
+    const val PREF_PRESET_EQ_BAND_2: String = "PRESET_EQ_BAND_2"
+    const val PREF_PRESET_EQ_BAND_3: String = "PRESET_EQ_BAND_3"
+    const val PREF_PRESET_EQ_BAND_4: String = "PRESET_EQ_BAND_4"
+    const val PREF_PRESET_EQ_BAND_5: String = "PRESET_EQ_BAND_5"
+    const val PREF_PRESET_EQ_BAND_6: String = "PRESET_EQ_BAND_6"
+    const val PREF_PRESET_EQ_BAND_7: String = "PRESET_EQ_BAND_7"
+    const val PREF_PRESET_EQ_BAND_8: String = "PRESET_EQ_BAND_8"
+    const val PREF_PRESET_EQ_BAND_9: String = "PRESET_EQ_BAND_9"
+    const val PREF_PRESET_BASS_BOOST: String = "PRESET_BASS_BOOST"
+    const val PREF_PRESET_REVERB: String = "PRESET_REVERB"
+    const val PREF_PRESET_DRC: String = "PRESET_DRC"
+    const val PREF_PRESET_STEREO_WIDTH: String = "PRESET_STEREO_WIDTH"
+    const val PREF_LANGUAGE_SELECTED: String = "PRESET_LANGUAGE_SELECTED"
 
     // default const values
     const val DEFAULT_SIZE_OF_METADATA_HISTORY: Int = 25
     const val DEFAULT_MAX_LENGTH_OF_METADATA_ENTRY: Int = 127
-    const val DEFAULT_DOWNLOAD_OVER_MOBILE: Boolean = false
     const val ACTIVE_DOWNLOADS_EMPTY: String = "zero"
     const val DEFAULT_MAX_RECONNECTION_COUNT: Int = 30
     const val LARGE_BUFFER_SIZE_MULTIPLIER: Int = 8
@@ -149,9 +166,6 @@ object Keys {
     const val RADIO_BROWSER_API_BASE: String = "all.api.radio-browser.info"
     const val RADIO_BROWSER_API_DEFAULT: String = "de1.api.radio-browser.info"
 
-    // locations
-    const val LOCATION_DEFAULT_STATION_IMAGE: String = "android.resource://com.michatec.radio/drawable/ic_default_station_image_24dp"
-
     // sizes (in dp)
     const val SIZE_STATION_IMAGE_CARD: Int = 72
     const val SIZE_STATION_IMAGE_MAXIMUM: Int = 640

app/src/main/java/com/michatec/radio/MainActivity.kt

@@ -1,31 +1,27 @@
-/*
- * MainActivity.kt
- * Implements the MainActivity class
- * MainActivity is the default activity that can host the player fragment and the settings fragment
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
+import android.content.Context
 import android.content.SharedPreferences
+import android.content.pm.PackageManager
+import android.content.res.Configuration
 import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.view.View
+import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.Toolbar
+import androidx.core.view.isVisible
 import androidx.navigation.fragment.NavHostFragment
 import androidx.navigation.ui.AppBarConfiguration
 import androidx.navigation.ui.NavigationUI
 import androidx.navigation.ui.navigateUp
 import com.michatec.radio.helpers.AppThemeHelper
 import com.michatec.radio.helpers.FileHelper
+import com.michatec.radio.helpers.LanguageHelper
 import com.michatec.radio.helpers.PreferencesHelper
-
+import org.woheller69.freeDroidWarn.FreeDroidWarn
+import java.util.Locale
 
 /*
  * MainActivity class
@@ -35,11 +31,30 @@ class MainActivity : AppCompatActivity() {
     /* Main class variables */
     private lateinit var appBarConfiguration: AppBarConfiguration
 
+    /* Overrides attachBaseContext from AppCompatActivity */
+    override fun attachBaseContext(newBase: Context) {
+        val languageCode = PreferencesHelper.loadSelectedLanguage()
+        val context = if (languageCode.isEmpty() || languageCode == "system") {
+            // Use system default locale
+            newBase
+        } else {
+            val locale = Locale.forLanguageTag(languageCode)
+            val config = Configuration(newBase.resources.configuration)
+            config.setLocale(locale)
+            newBase.createConfigurationContext(config)
+        }
+        super.attachBaseContext(context)
+    }
 
     /* Overrides onCreate from AppCompatActivity */
     override fun onCreate(savedInstanceState: Bundle?) {
+        enableEdgeToEdge()
+        setTheme(R.style.AppTheme)
         super.onCreate(savedInstanceState)
 
+        // Free Android
+        FreeDroidWarn.showWarningOnUpgrade(this, BuildConfig.VERSION_CODE)
+
         // set up views
         setContentView(R.layout.activity_main)
 
@@ -49,21 +64,51 @@ class MainActivity : AppCompatActivity() {
         // set up action bar
         setSupportActionBar(findViewById(R.id.main_toolbar))
         val toolbar: Toolbar = findViewById(R.id.main_toolbar)
-        val navHostFragment = supportFragmentManager.findFragmentById(R.id.main_host_container) as NavHostFragment
+        val navHostFragment =
+            supportFragmentManager.findFragmentById(R.id.main_host_container) as NavHostFragment
         val navController = navHostFragment.navController
         appBarConfiguration = AppBarConfiguration(navController.graph)
         NavigationUI.setupWithNavController(toolbar, navController, appBarConfiguration)
         supportActionBar?.hide()
 
+        // TV-specific loading logic: Hide the overlay once the app is ready
+        if (packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)) {
+            Handler(Looper.getMainLooper()).postDelayed({
+                hideLoadingOverlay()
+            }, 1200)
+        } else {
+            findViewById<View>(R.id.loading_layout)?.visibility = View.GONE
+        }
+
         // register listener for changes in shared preferences
         PreferencesHelper.registerPreferenceChangeListener(sharedPreferenceChangeListener)
     }
 
+    /* Hides the loading/splash overlay */
+    private fun hideLoadingOverlay() {
+        findViewById<View>(R.id.loading_layout)?.let { overlay ->
+            if (overlay.isVisible) {
+                overlay.animate().alpha(0f).setDuration(500)
+                    .withEndAction { overlay.visibility = View.GONE }
+            }
+        }
+    }
+
+
+    /* Overrides onResume from AppCompatActivity */
+    override fun onResume() {
+        try {
+            super.onResume()
+        } catch (_: ClassCastException) {
+            // Do nothing
+        }
+    }
+
 
     /* Overrides onSupportNavigateUp from AppCompatActivity */
     override fun onSupportNavigateUp(): Boolean {
-        // Taken from: https://developer.android.com/guide/navigation/navigation-ui#action_bar
-        val navHostFragment = supportFragmentManager.findFragmentById(R.id.main_host_container) as NavHostFragment
+        val navHostFragment =
+            supportFragmentManager.findFragmentById(R.id.main_host_container) as NavHostFragment
         val navController = navHostFragment.navController
         return navController.navigateUp(appBarConfiguration) || super.onSupportNavigateUp()
     }
@@ -86,6 +131,9 @@ class MainActivity : AppCompatActivity() {
                 Keys.PREF_THEME_SELECTION -> {
                     AppThemeHelper.setTheme(PreferencesHelper.loadThemeSelection())
                 }
+                Keys.PREF_LANGUAGE_SELECTED -> {
+                    LanguageHelper.setLanguage(this, PreferencesHelper.loadSelectedLanguage())
+                }
             }
         }
     /*

app/src/main/java/com/michatec/radio/PlayerFragment.kt

@@ -1,17 +1,3 @@
-/*
- * PlayerFragment.kt
- * Implements the PlayerFragment class
- * PlayerFragment is the fragment that hosts Radio's list of stations and a player sheet
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import android.app.Activity
@@ -36,6 +22,9 @@ import androidx.annotation.OptIn
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.core.net.toUri
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.core.view.updatePadding
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.ViewModelProvider
 import androidx.media3.common.MediaItem
@@ -45,6 +34,7 @@ import androidx.media3.common.util.UnstableApi
 import androidx.media3.session.MediaController
 import androidx.media3.session.SessionResult
 import androidx.media3.session.SessionToken
+import androidx.navigation.fragment.findNavController
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.RecyclerView
 import com.android.volley.Request
@@ -181,8 +171,11 @@ class PlayerFragment : Fragment(),
         // hide action bar
         (activity as AppCompatActivity).supportActionBar?.hide()
 
-        // set the same background color of the player sheet for the navigation bar
-        requireActivity().window.navigationBarColor = ContextCompat.getColor(requireActivity(), R.color.player_sheet_background)
+        ViewCompat.setOnApplyWindowInsetsListener(layout.rootView) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.updatePadding(bottom = systemBars.bottom)
+            insets
+        }
         // associate the ItemTouchHelper with the RecyclerView
         itemTouchHelper = ItemTouchHelper(ItemTouchHelperCallback())
         itemTouchHelper?.attachToRecyclerView(layout.recyclerView)
@@ -256,7 +249,6 @@ class PlayerFragment : Fragment(),
         // load player state
         playerState = PreferencesHelper.loadPlayerState()
         // recreate player ui
-//        setupPlaybackControls()
         updatePlayerViews()
         updateStationListState()
         togglePeriodicSleepTimerUpdateRequest()
@@ -264,7 +256,7 @@ class PlayerFragment : Fragment(),
         observeCollectionViewModel()
         // handle navigation arguments
         handleNavigationArguments()
-//        // handle start intent - if started via tap on rss link
+        // handle start intent - if started via tap on rss link
         handleStartIntent()
         // start watching for changes in shared preferences
         PreferencesHelper.registerPreferenceChangeListener(this as SharedPreferences.OnSharedPreferenceChangeListener)
@@ -351,7 +343,14 @@ class PlayerFragment : Fragment(),
 
     /* Overrides onAddNewButtonTapped from CollectionAdapterListener */
     override fun onAddNewButtonTapped() {
-        FindStationDialog(activity as Activity, this as FindStationDialog.FindStationDialogListener).show()
+        // stop playback when adding a new station
+        controller?.stop()
+
+        if (activity?.packageManager?.hasSystemFeature(PackageManager.FEATURE_LEANBACK) == true) {
+            findNavController().navigate(R.id.action_map_fragment_to_player_to_add_station)
+        } else {
+            FindStationDialog(activity as Activity, this as FindStationDialog.FindStationDialogListener).show()
+        }
     }
 
 
@@ -411,6 +410,7 @@ class PlayerFragment : Fragment(),
 
     /* Releases MediaController */
     private fun releaseController() {
+        controller?.removeListener(playerListener)
         MediaController.releaseFuture(controllerFuture)
     }
 
@@ -419,6 +419,13 @@ class PlayerFragment : Fragment(),
     private fun setupController() {
         val controller: MediaController = this.controller ?: return
         controller.addListener(playerListener)
+
+        // Sync local playerState with actual controller state
+        if (playerState.isPlaying != controller.isPlaying) {
+            playerState.isPlaying = controller.isPlaying
+            updatePlayerViews()
+        }
+
         requestMetadataUpdate()
         // handle start intent
         handleStartIntent()
@@ -462,7 +469,7 @@ class PlayerFragment : Fragment(),
         swipeToMarkStarredItemTouchHelper.attachToRecyclerView(layout.recyclerView)
 
         // set up sleep timer start button
-        layout.sheetSleepTimerStartButtonView.setOnClickListener {
+        layout.sheetSleepTimerStartButtonView?.setOnClickListener {
             when (controller?.isPlaying) {
                 true -> {
                     val timePicker = MaterialTimePicker.Builder()
@@ -492,12 +499,28 @@ class PlayerFragment : Fragment(),
         }
 
         // set up sleep timer cancel button
-        layout.sheetSleepTimerCancelButtonView.setOnClickListener {
+        layout.sheetSleepTimerCancelButtonView?.setOnClickListener {
             playerState.sleepTimerRunning = false
             controller?.cancelSleepTimer()
             togglePeriodicSleepTimerUpdateRequest()
         }
 
+        // set up TV station navigation
+        layout.playerPrevButtonView?.setOnClickListener {
+            val currentPosition = CollectionHelper.getStationPosition(collection, playerState.stationUuid)
+            if (currentPosition > 0) {
+                val prevStation = collection.stations[currentPosition - 1]
+                onPlayButtonTapped(prevStation.uuid)
+            }
+        }
+        layout.playerNextButtonView?.setOnClickListener {
+            val currentPosition = CollectionHelper.getStationPosition(collection, playerState.stationUuid)
+            if (currentPosition < collection.stations.size - 1) {
+                val nextStation = collection.stations[currentPosition + 1]
+                onPlayButtonTapped(nextStation.uuid)
+            }
+        }
+
     }
 
     /* Sets up the player */
@@ -559,15 +582,27 @@ class PlayerFragment : Fragment(),
 
     /* Handles this activity's start intent */
     private fun handleStartIntent() {
-        if ((activity as Activity).intent.action != null) {
-            when ((activity as Activity).intent.action) {
-                Keys.ACTION_SHOW_PLAYER -> handleShowPlayer()
-                Intent.ACTION_VIEW -> handleViewIntent()
-                Keys.ACTION_START -> handleStartPlayer()
+        val intent = (activity as Activity).intent
+        if (intent.action != null && intent.action?.isNotEmpty() == true) {
+            var handled = false
+            when (intent.action) {
+                Keys.ACTION_SHOW_PLAYER -> {
+                    handleShowPlayer()
+                    handled = true
+                }
+                Intent.ACTION_VIEW -> {
+                    handleViewIntent()
+                    handled = true
+                }
+                Keys.ACTION_START -> {
+                    handled = handleStartPlayer()
+                }
+            }
+            if (handled) {
+                // clear intent action to prevent double calls
+                intent.action = ""
             }
         }
-        // clear intent action to prevent double calls
-        (activity as Activity).intent.action = ""
     }
 
 
@@ -588,16 +623,18 @@ class PlayerFragment : Fragment(),
                 val scheme: String = intentUri.scheme ?: String()
                 // CASE: intent is a web link
                 if (scheme.startsWith("http")) {
-                    Log.i(TAG, "Transistor was started to handle a web link.")
+                    Log.i(TAG, "Radio was started to handle a web link.")
                     stationList.addAll(CollectionHelper.createStationsFromUrl(intentUri.toString()))
                 }
                 // CASE: intent is a local file
                 else if (scheme.startsWith("content")) {
-                    Log.i(TAG, "Transistor was started to handle a local audio playlist.")
+                    Log.i(TAG, "Radio was started to handle a local audio playlist.")
                     stationList.addAll(CollectionHelper.createStationListFromContentUri(activity as Context, intentUri))
                 }
                 withContext(Main) {
                     if (stationList.isNotEmpty()) {
+                        // stop playback when adding a new station via intent
+                        controller?.stop()
                         AddStationDialog(activity as Activity, stationList, this@PlayerFragment as AddStationDialog.AddStationDialogListener).show()
                     } else {
                         // invalid address
@@ -610,17 +647,30 @@ class PlayerFragment : Fragment(),
 
 
     /* Handles START_PLAYER_SERVICE request from App Shortcut */
-    private fun handleStartPlayer() {
+    private fun handleStartPlayer(): Boolean {
+        if (controller == null || collection.stations.isEmpty()) {
+            return false
+        }
         val intent: Intent = (activity as Activity).intent
         if (intent.hasExtra(Keys.EXTRA_START_LAST_PLAYED_STATION)) {
-            controller?.play(activity as Context, CollectionHelper.getStation(collection, playerState.stationUuid))
+            val station = CollectionHelper.getStation(collection, playerState.stationUuid)
+            if (station.isValid()) {
+                controller?.play(activity as Context, station)
+                return true
+            }
         } else if (intent.hasExtra(Keys.EXTRA_STATION_UUID)) {
             val uuid: String = intent.getStringExtra(Keys.EXTRA_STATION_UUID) ?: String()
-            controller?.play(activity as Context, CollectionHelper.getStation(collection, uuid))
+            val station = CollectionHelper.getStation(collection, uuid)
+            if (station.isValid()) {
+                controller?.play(activity as Context, station)
+                return true
+            }
         } else if (intent.hasExtra(Keys.EXTRA_STREAM_URI)) {
             val streamUri: String = intent.getStringExtra(Keys.EXTRA_STREAM_URI) ?: String()
             controller?.playStreamDirectly(streamUri)
+            return true
         }
+        return false
     }
 
 
@@ -638,9 +688,9 @@ class PlayerFragment : Fragment(),
             collection = it
             // updates current station in player views
             playerState = PreferencesHelper.loadPlayerState()
-//            // get station
+            // get station
             val station: Station = CollectionHelper.getStation(collection, playerState.stationUuid)
-//            // update player views
+            // update player views
             layout.updatePlayerViews(activity as Context, station, playerState.isPlaying)
             // handle start intent
             handleStartIntent()
@@ -740,6 +790,7 @@ class PlayerFragment : Fragment(),
                 layout.showBufferingIndicator(buffering = false)
             } else {
                 // playback is paused or stopped
+                layout.updateSleepTimer(activity as Context, 0L)
                 // check if buffering (playback is not active but playWhenReady is true)
                 if (controller?.playWhenReady == true) {
                     // playback is buffering, show the buffering indicator
@@ -769,7 +820,7 @@ class PlayerFragment : Fragment(),
 
 
     /*
-     * Check for update on github
+     * Check for update on GitHub
      */
     private fun checkForUpdates() {
         val url = getString(R.string.snackbar_github_update_check_url)

app/src/main/java/com/michatec/radio/PlayerService.kt

@@ -1,17 +1,3 @@
-/*
- * PlayerService.kt
- * Implements the PlayerService class
- * PlayerService is Radio's foreground service that plays radio station audio
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import android.app.PendingIntent
@@ -23,13 +9,16 @@ import android.os.Bundle
 import android.os.CountDownTimer
 import android.util.Log
 import androidx.localbroadcastmanager.content.LocalBroadcastManager
-import androidx.media.MediaBrowserServiceCompat.BrowserRoot.EXTRA_RECENT
+import androidx.media3.cast.CastPlayer
 import androidx.media3.common.*
 import androidx.media3.common.util.UnstableApi
 import androidx.media3.datasource.HttpDataSource
 import androidx.media3.exoplayer.DefaultLoadControl
+import androidx.media3.exoplayer.DefaultRenderersFactory
 import androidx.media3.exoplayer.ExoPlayer
 import androidx.media3.exoplayer.analytics.AnalyticsListener
+import androidx.media3.exoplayer.audio.AudioSink
+import androidx.media3.exoplayer.audio.DefaultAudioSink
 import androidx.media3.exoplayer.source.DefaultMediaSourceFactory
 import androidx.media3.exoplayer.upstream.DefaultAllocator
 import androidx.media3.exoplayer.upstream.DefaultLoadErrorHandlingPolicy
@@ -39,10 +28,8 @@ import com.google.common.collect.ImmutableList
 import com.google.common.util.concurrent.Futures
 import com.google.common.util.concurrent.ListenableFuture
 import com.michatec.radio.core.Collection
-import com.michatec.radio.helpers.AudioHelper
-import com.michatec.radio.helpers.CollectionHelper
-import com.michatec.radio.helpers.FileHelper
-import com.michatec.radio.helpers.PreferencesHelper
+import com.michatec.radio.core.Station
+import com.michatec.radio.helpers.*
 import kotlinx.coroutines.*
 import kotlinx.coroutines.Dispatchers.Main
 import java.util.*
@@ -52,13 +39,15 @@ import java.util.*
  * PlayerService class
  */
 @UnstableApi
-class PlayerService : MediaLibraryService() {
+class PlayerService : MediaLibraryService(), SharedPreferences.OnSharedPreferenceChangeListener {
 
     /* Define log tag */
     private val TAG: String = PlayerService::class.java.simpleName
 
     /* Main class variables */
     private lateinit var player: Player
+    private lateinit var exoPlayer: ExoPlayer
+    private lateinit var castPlayer: CastPlayer
     private lateinit var mediaLibrarySession: MediaLibrarySession
     private lateinit var sleepTimer: CountDownTimer
     var sleepTimerTimeRemaining: Long = 0L
@@ -70,6 +59,9 @@ class PlayerService : MediaLibraryService() {
     private var playbackRestartCounter: Int = 0
     private var playLastStation: Boolean = false
     private var manuallyCancelledSleepTimer = false
+    
+    // Native Audio Processor instance
+    private val nativeAudioProcessor = NativeAudioProcessor()
 
 
     /* Overrides onCreate from Service */
@@ -90,15 +82,25 @@ class PlayerService : MediaLibraryService() {
         setMediaNotificationProvider(notificationProvider)
         // fetch the metadata history
         metadataHistory = PreferencesHelper.loadMetadataHistory()
+        
+        // register preference change listener
+        PreferencesHelper.registerPreferenceChangeListener(this)
+        // apply initial audio effects
+        applyAudioEffects()
     }
 
 
     /* Overrides onDestroy from Service */
     override fun onDestroy() {
-        // player.removeAnalyticsListener(analyticsListener)
+        // Reset playing state in preferences
+        PreferencesHelper.saveIsPlaying(false)
         player.removeListener(playerListener)
         player.release()
+        exoPlayer.release()
+        castPlayer.release()
         mediaLibrarySession.release()
+        // unregister preference change listener
+        PreferencesHelper.unregisterPreferenceChangeListener(this)
         super.onDestroy()
     }
 
@@ -119,8 +121,26 @@ class PlayerService : MediaLibraryService() {
 
     /* Initializes the ExoPlayer */
     private fun initializePlayer() {
-        val exoPlayer: ExoPlayer = ExoPlayer.Builder(this).apply {
-            setAudioAttributes(AudioAttributes.DEFAULT, true)
+        val audioAttributes = AudioAttributes.Builder()
+            .setContentType(C.AUDIO_CONTENT_TYPE_MUSIC)
+            .setUsage(C.USAGE_MEDIA)
+            .build()
+
+        // Create a RenderersFactory that injects the NativeAudioProcessor
+        val renderersFactory = object : DefaultRenderersFactory(this) {
+            override fun buildAudioSink(
+                context: Context,
+                enableFloatOutput: Boolean,
+                enableAudioTrackPlaybackParams: Boolean
+            ): AudioSink {
+                return DefaultAudioSink.Builder(context)
+                    .setAudioProcessors(arrayOf(nativeAudioProcessor))
+                    .build()
+            }
+        }
+
+        exoPlayer = ExoPlayer.Builder(this, renderersFactory).apply {
+            setAudioAttributes(audioAttributes, true)
             setHandleAudioBecomingNoisy(true)
             setLoadControl(createDefaultLoadControl(bufferSizeMultiplier))
             setMediaSourceFactory(
@@ -132,8 +152,12 @@ class PlayerService : MediaLibraryService() {
         exoPlayer.addAnalyticsListener(analyticsListener)
         exoPlayer.addListener(playerListener)
 
-        // manually add seek to next and seek to previous since headphones issue them and they are translated to next and previous station
-        player = object : ForwardingPlayer(exoPlayer) {
+        // Initialize CastPlayer
+        castPlayer = CastPlayer.Builder(this).setLocalPlayer(exoPlayer).build()
+
+        // manually add seek to next and seek to previous since headphones issue them, and they are translated to next and previous station
+        // IMPORTANT: Use castPlayer here instead of exoPlayer so the session controls both local and remote playback
+        player = object : ForwardingPlayer(castPlayer) {
             override fun getAvailableCommands(): Player.Commands {
                 return super.getAvailableCommands().buildUpon().add(COMMAND_SEEK_TO_NEXT)
                     .add(COMMAND_SEEK_TO_PREVIOUS).build()
@@ -146,7 +170,16 @@ class PlayerService : MediaLibraryService() {
             override fun getDuration(): Long {
                 return C.TIME_UNSET // this will hide progress bar for HLS stations in the notification
             }
+
+            override fun seekToNext() {
+                playNextStation()
+            }
+
+            override fun seekToPrevious() {
+                playPreviousStation()
+            }
         }
+        player.addListener(playerListener)
     }
 
 
@@ -210,12 +243,9 @@ class PlayerService : MediaLibraryService() {
     /* Cancels sleep timer */
     private fun cancelSleepTimer() {
         if (this::sleepTimer.isInitialized) {
-            if (manuallyCancelledSleepTimer) {
-                sleepTimerTimeRemaining = 0L
-                sleepTimer.cancel()
-            }
-            manuallyCancelledSleepTimer = false
+            sleepTimer.cancel()
         }
+        sleepTimerTimeRemaining = 0L
         // store timer state
         PreferencesHelper.saveSleepTimerRunning(isRunning = false)
     }
@@ -258,15 +288,104 @@ class PlayerService : MediaLibraryService() {
                 async(Dispatchers.Default) { FileHelper.readCollectionSuspended(context) }
             // wait for result and update collection
             collection = deferred.await()
-//            // special case: trigger metadata view update for stations that have no metadata
-//            if (player.isPlaying && station.name == getCurrentMetadata()) {
-//                station = CollectionHelper.getStation(collection, station.uuid)
-//                updateMetadata(null)
-//            }
         }
     }
 
 
+    /* Applies audio effects based on preferences */
+    private fun applyAudioEffects() {
+        val selectedPreset = PreferencesHelper.loadSelectedPreset()
+        if (selectedPreset.isNotEmpty()) {
+            applyPreset(selectedPreset)
+        } else {
+            // Apply manual settings
+            nativeAudioProcessor.enableBassBoost(PreferencesHelper.loadBassBoost())
+            nativeAudioProcessor.setReverb(PreferencesHelper.loadReverb())
+            nativeAudioProcessor.enableDrc(PreferencesHelper.loadDrcEnabled())
+            nativeAudioProcessor.setWidth(1f)
+            // Apply all 10 EQ bands
+            val eqGains = FloatArray(10)
+            for (i in 0 until 10) {
+                eqGains[i] = PreferencesHelper.loadEqBand(i).toFloat()
+            }
+            nativeAudioProcessor.setEqAll(eqGains)
+        }
+    }
+
+    /* Applies a saved preset */
+    private fun applyPreset(presetName: String) {
+        when (presetName) {
+            getString(R.string.pref_preset_rock) -> nativeAudioProcessor.setPresetRock()
+            getString(R.string.pref_preset_pop) -> nativeAudioProcessor.setPresetPop()
+            getString(R.string.pref_preset_jazz) -> nativeAudioProcessor.setPresetJazz()
+            getString(R.string.pref_preset_flat) -> nativeAudioProcessor.setPresetFlat()
+            else -> {
+                // Custom preset - load from preferences
+                nativeAudioProcessor.enableDrc(PreferencesHelper.loadPresetDrc())
+                nativeAudioProcessor.setReverb(PreferencesHelper.loadPresetReverb())
+                nativeAudioProcessor.setWidth(PreferencesHelper.loadPresetStereoWidth())
+                nativeAudioProcessor.enableBassBoost(PreferencesHelper.loadPresetBassBoost())
+                val eqGains = FloatArray(10)
+                for (i in 0 until 10) {
+                    eqGains[i] = PreferencesHelper.loadPresetEqBand(i).toFloat()
+                }
+                nativeAudioProcessor.setEqAll(eqGains)
+            }
+        }
+    }
+
+    /* Overrides onSharedPreferenceChanged from SharedPreferences.OnSharedPreferenceChangeListener */
+    override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
+        when (key) {
+            Keys.PREF_BASS_BOOST, Keys.PREF_REVERB, Keys.PREF_DRC,
+            Keys.PREF_EQ_LOW, Keys.PREF_EQ_MID, Keys.PREF_EQ_HIGH,
+            Keys.PREF_EQ_BAND_1, Keys.PREF_EQ_BAND_2, Keys.PREF_EQ_BAND_3,
+            Keys.PREF_EQ_BAND_4, Keys.PREF_EQ_BAND_5, Keys.PREF_EQ_BAND_6,
+            Keys.PREF_EQ_BAND_7,
+            Keys.PREF_PRESET_SELECTED,
+            Keys.PREF_PRESET_EQ_BAND_0, Keys.PREF_PRESET_EQ_BAND_1, Keys.PREF_PRESET_EQ_BAND_2,
+            Keys.PREF_PRESET_EQ_BAND_3, Keys.PREF_PRESET_EQ_BAND_4, Keys.PREF_PRESET_EQ_BAND_5,
+            Keys.PREF_PRESET_EQ_BAND_6, Keys.PREF_PRESET_EQ_BAND_7, Keys.PREF_PRESET_EQ_BAND_8,
+            Keys.PREF_PRESET_EQ_BAND_9,
+            Keys.PREF_PRESET_BASS_BOOST, Keys.PREF_PRESET_REVERB,
+            Keys.PREF_PRESET_DRC, Keys.PREF_PRESET_STEREO_WIDTH -> {
+                applyAudioEffects()
+            }
+        }
+    }
+
+
+    /* Switches to the next radio station in collection */
+    private fun playNextStation() {
+        val currentMediaId = player.currentMediaItem?.mediaId ?: PreferencesHelper.loadLastPlayedStationUuid()
+        val currentPosition = CollectionHelper.getStationPosition(collection, currentMediaId)
+        if (currentPosition != -1) {
+            val nextPosition = if (currentPosition < collection.stations.size - 1) currentPosition + 1 else 0
+            playStation(collection.stations[nextPosition])
+        }
+    }
+
+
+    /* Switches to the previous radio station in collection */
+    private fun playPreviousStation() {
+        val currentMediaId = player.currentMediaItem?.mediaId ?: PreferencesHelper.loadLastPlayedStationUuid()
+        val currentPosition = CollectionHelper.getStationPosition(collection, currentMediaId)
+        if (currentPosition != -1) {
+            val previousPosition = if (currentPosition > 0) currentPosition - 1 else collection.stations.size - 1
+            playStation(collection.stations[previousPosition])
+        }
+    }
+
+
+    /* Starts playback of a radio station */
+    private fun playStation(station: Station) {
+        val mediaItem = CollectionHelper.buildMediaItem(this, station)
+        player.setMediaItem(mediaItem)
+        player.prepare()
+        player.play()
+    }
+
+
     /*
      * Custom MediaSession Callback that handles player commands
      */
@@ -289,13 +408,13 @@ class PlayerService : MediaLibraryService() {
             session: MediaSession,
             controller: MediaSession.ControllerInfo
         ): MediaSession.ConnectionResult {
-            // add custom commands
             val connectionResult: MediaSession.ConnectionResult = super.onConnect(session, controller)
             val builder: SessionCommands.Builder = connectionResult.availableSessionCommands.buildUpon()
             builder.add(SessionCommand(Keys.CMD_START_SLEEP_TIMER, Bundle.EMPTY))
             builder.add(SessionCommand(Keys.CMD_CANCEL_SLEEP_TIMER, Bundle.EMPTY))
             builder.add(SessionCommand(Keys.CMD_REQUEST_SLEEP_TIMER_REMAINING, Bundle.EMPTY))
             builder.add(SessionCommand(Keys.CMD_REQUEST_METADATA_HISTORY, Bundle.EMPTY))
+            builder.add(SessionCommand(Keys.CMD_GET_VISUALIZER_DATA, Bundle.EMPTY))
             return MediaSession.ConnectionResult.accept(builder.build(), connectionResult.availablePlayerCommands)
         }
 
@@ -327,8 +446,8 @@ class PlayerService : MediaLibraryService() {
             browser: MediaSession.ControllerInfo,
             params: LibraryParams?
         ): ListenableFuture<LibraryResult<MediaItem>> {
-            return if (params?.extras?.containsKey(EXTRA_RECENT) == true) {
-                // special case: system requested media resumption via EXTRA_RECENT
+            return if (params?.isRecent == true) {
+                // special case: system requested media resumption via isRecent
                 playLastStation = true
                 Futures.immediateFuture(LibraryResult.ofItem(CollectionHelper.getRecent(this@PlayerService, collection), params))
             } else {
@@ -382,6 +501,19 @@ class PlayerService : MediaLibraryService() {
                         )
                     )
                 }
+                Keys.CMD_GET_VISUALIZER_DATA -> {
+                    val resultBundle = Bundle()
+                    resultBundle.putFloatArray(
+                        Keys.EXTRA_VISUALIZER_DATA,
+                        nativeAudioProcessor.getVisualizer()
+                    )
+                    return Futures.immediateFuture(
+                        SessionResult(
+                            SessionResult.RESULT_SUCCESS,
+                            resultBundle
+                        )
+                    )
+                }
             }
             return super.onCustomCommand(session, controller, customCommand, args)
         }
@@ -400,19 +532,19 @@ class PlayerService : MediaLibraryService() {
             customLayout: ImmutableList<CommandButton>,
             showPauseButton: Boolean
         ): ImmutableList<CommandButton> {
-            val seekToPreviousCommandButton = CommandButton.Builder()
+            val seekToPreviousCommandButton = CommandButton.Builder(CommandButton.ICON_UNDEFINED)
                 .setPlayerCommand(Player.COMMAND_SEEK_TO_PREVIOUS)
-                .setIconResId(R.drawable.ic_notification_skip_to_previous_36dp)
+                .setCustomIconResId(R.drawable.ic_notification_skip_to_previous_36dp)
                 .setEnabled(true)
                 .build()
-            val playCommandButton = CommandButton.Builder()
+            val playCommandButton = CommandButton.Builder(CommandButton.ICON_UNDEFINED)
                 .setPlayerCommand(Player.COMMAND_PLAY_PAUSE)
-                .setIconResId(if (player.isPlaying) R.drawable.ic_notification_stop_36dp else R.drawable.ic_notification_play_36dp)
+                .setCustomIconResId(if (player.isPlaying) R.drawable.ic_notification_stop_36dp else R.drawable.ic_notification_play_36dp)
                 .setEnabled(true)
                 .build()
-            val seekToNextCommandButton = CommandButton.Builder()
+            val seekToNextCommandButton = CommandButton.Builder(CommandButton.ICON_UNDEFINED)
                 .setPlayerCommand(Player.COMMAND_SEEK_TO_NEXT)
-                .setIconResId(R.drawable.ic_notification_skip_to_next_36dp)
+                .setCustomIconResId(R.drawable.ic_notification_skip_to_next_36dp)
                 .setEnabled(true)
                 .build()
             val commandButtons: MutableList<CommandButton> = mutableListOf(
@@ -446,57 +578,28 @@ class PlayerService : MediaLibraryService() {
                 currentMediaId,
                 isPlaying
             )
-            //updatePlayerState(station, playbackState)
 
-            if (isPlaying) {
-                // playback is active
-            } else {
+            if (!isPlaying) {
                 // cancel sleep timer
                 cancelSleepTimer()
                 // reset metadata
                 updateMetadata()
 
-                // playback is not active
-                // Not playing because playback is paused, ended, suppressed, or the player
-                // is buffering, stopped or failed. Check player.getPlayWhenReady,
-                // player.getPlaybackState, player.getPlaybackSuppressionReason and
-                // player.getPlaybackError for details.
+                // Check playback state to decide whether to stop the service
                 when (player.playbackState) {
-                    // player is able to immediately play from its current position
+                    Player.STATE_ENDED, Player.STATE_IDLE -> {
+                        stopSelf()
+                    }
                     Player.STATE_READY -> {
-                        stopSelf()
+                        // Playback is paused. For radio, we keep the service running to allow resumption from headphones.
                     }
-                    // buffering - data needs to be loaded
                     Player.STATE_BUFFERING -> {
-                        stopSelf()
-                    }
-                    // player finished playing all media
-                    Player.STATE_ENDED -> {
-                        stopSelf()
-                    }
-                    // initial state or player is stopped or playback failed
-                    Player.STATE_IDLE -> {
-                        stopSelf()
+                        // DO NOT stop the service while buffering (especially important for Cast)
                     }
                 }
             }
         }
 
-        override fun onPlayWhenReadyChanged(playWhenReady: Boolean, reason: Int) {
-            super.onPlayWhenReadyChanged(playWhenReady, reason)
-            if (!playWhenReady) {
-                when (reason) {
-                    Player.PLAY_WHEN_READY_CHANGE_REASON_END_OF_MEDIA_ITEM -> {
-                        stopSelf()
-                    }
-                    else -> {
-                        stopSelf()
-                    }
-                }
-            }
-        }
-
-
         override fun onPlayerError(error: PlaybackException) {
             super.onPlayerError(error)
             Log.d(TAG, "PlayerError occurred: ${error.errorCodeName}")
@@ -516,17 +619,13 @@ class PlayerService : MediaLibraryService() {
 
 
     /*
-     * Custom LoadErrorHandlingPolicy that network drop outs
+     * Custom LoadErrorHandlingPolicy that network drop-outs
      */
     private val loadErrorHandlingPolicy: DefaultLoadErrorHandlingPolicy = object: DefaultLoadErrorHandlingPolicy()  {
         override fun getRetryDelayMsFor(loadErrorInfo: LoadErrorHandlingPolicy.LoadErrorInfo): Long {
             // try to reconnect every 5 seconds - up to 20 times
             if (loadErrorInfo.errorCount <= Keys.DEFAULT_MAX_RECONNECTION_COUNT && loadErrorInfo.exception is HttpDataSource.HttpDataSourceException) {
                 return Keys.RECONNECTION_WAIT_INTERVAL
-//            } else {
-//                CoroutineScope(Main).launch {
-//                    player.stop()
-//                }
             }
             return C.TIME_UNSET
         }

app/src/main/java/com/michatec/radio/Radio.kt

@@ -1,21 +1,8 @@
-/*
- * Radio.kt
- * Implements the Radio class
- * Radio is the base Application class that sets up day and night theme
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import android.app.Application
 import com.michatec.radio.helpers.AppThemeHelper
+import com.michatec.radio.helpers.LanguageHelper
 import com.michatec.radio.helpers.PreferencesHelper
 import com.michatec.radio.helpers.PreferencesHelper.initPreferences
 
@@ -32,11 +19,7 @@ class Radio : Application() {
         initPreferences()
         // set Dark / Light theme state
         AppThemeHelper.setTheme(PreferencesHelper.loadThemeSelection())
-    }
-
-    /* Implements onTerminate */
-    override fun onTerminate() {
-        super.onTerminate()
+        LanguageHelper.setLanguage(this, PreferencesHelper.loadSelectedLanguage())
     }
 
 }

app/src/main/java/com/michatec/radio/SettingsFragment.kt

@@ -1,17 +1,3 @@
-/*
- * SettingsFragment.kt
- * Implements the SettingsFragment fragment
- * A SettingsFragment displays the user accessible settings of the app
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import android.app.Activity
@@ -20,7 +6,6 @@ import android.content.ClipboardManager
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
 import android.util.Log
 import android.view.View
@@ -28,14 +13,15 @@ import androidx.activity.result.ActivityResult
 import androidx.activity.result.contract.ActivityResultContracts.StartActivityForResult
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.net.toUri
-import androidx.core.os.bundleOf
 import androidx.navigation.fragment.findNavController
 import androidx.preference.*
 import com.google.android.material.snackbar.Snackbar
 import com.michatec.radio.dialogs.ErrorDialog
+import com.michatec.radio.dialogs.LanguageSelectionDialog
+import com.michatec.radio.dialogs.PresetSelectionDialog
+import com.michatec.radio.dialogs.ThemeSelectionDialog
 import com.michatec.radio.dialogs.YesNoDialog
 import com.michatec.radio.helpers.*
-import com.michatec.radio.helpers.AppThemeHelper.getColor
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.launch
@@ -46,7 +32,7 @@ import java.util.*
 /*
  * SettingsFragment class
  */
-class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogListener {
+class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogListener, ThemeSelectionDialog.ThemeSelectionDialogListener, PresetSelectionDialog.PresetSelectionDialogListener, LanguageSelectionDialog.LanguageSelectionDialogListener {
 
 
     /* Define log tag */
@@ -60,7 +46,6 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
         (activity as AppCompatActivity).supportActionBar?.show()
         (activity as AppCompatActivity).supportActionBar?.setDisplayHomeAsUpEnabled(true)
         (activity as AppCompatActivity).supportActionBar?.title = getString(R.string.fragment_settings_title)
-        requireActivity().window.navigationBarColor = getColor(requireContext(), android.R.attr.colorBackground)
     }
 
     /* Overrides onCreatePreferences from PreferenceFragmentCompat */
@@ -69,34 +54,21 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
         val context = preferenceManager.context
         val screen = preferenceManager.createPreferenceScreen(context)
 
+        // Load current preset once
+        val currentPreset = PreferencesHelper.loadSelectedPreset()
+
         // set up "App Theme" preference
-        val preferenceThemeSelection = ListPreference(activity as Context)
+        val preferenceThemeSelection = Preference(activity as Context)
         preferenceThemeSelection.title = getString(R.string.pref_theme_selection_title)
         preferenceThemeSelection.setIcon(R.drawable.ic_brush_24dp)
         preferenceThemeSelection.key = Keys.PREF_THEME_SELECTION
         preferenceThemeSelection.summary = "${getString(R.string.pref_theme_selection_summary)} ${
             AppThemeHelper.getCurrentTheme(activity as Context)
         }"
-        preferenceThemeSelection.entries = arrayOf(
-            getString(R.string.pref_theme_selection_mode_device_default),
-            getString(R.string.pref_theme_selection_mode_light),
-            getString(R.string.pref_theme_selection_mode_dark)
-        )
-        preferenceThemeSelection.entryValues = arrayOf(
-            Keys.STATE_THEME_FOLLOW_SYSTEM,
-            Keys.STATE_THEME_LIGHT_MODE,
-            Keys.STATE_THEME_DARK_MODE
-        )
-        preferenceThemeSelection.setDefaultValue(Keys.STATE_THEME_FOLLOW_SYSTEM)
-        preferenceThemeSelection.setOnPreferenceChangeListener { preference, newValue ->
-            if (preference is ListPreference) {
-                val index: Int = preference.entryValues.indexOf(newValue)
-                preferenceThemeSelection.summary =
-                    "${getString(R.string.pref_theme_selection_summary)} ${preference.entries[index]}"
-                return@setOnPreferenceChangeListener true
-            } else {
-                return@setOnPreferenceChangeListener false
-            }
+        preferenceThemeSelection.setOnPreferenceClickListener {
+            // show theme selection dialog
+            ThemeSelectionDialog(this).show(activity as Context)
+            return@setOnPreferenceClickListener true
         }
 
         // set up "Update Station Images" preference
@@ -115,7 +87,6 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             return@setOnPreferenceClickListener true
         }
 
-
         // set up "Update Stations" preference
         val preferenceUpdateCollection = Preference(activity as Context)
         preferenceUpdateCollection.title = getString(R.string.pref_update_collection_title)
@@ -178,7 +149,7 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
 
 
         // set up "Buffer Size" preference
-        val preferenceBufferSize = SwitchPreferenceCompat(activity as Context)
+        val preferenceBufferSize = MarqueeSwitchPreference(context)
         preferenceBufferSize.title = getString(R.string.pref_buffer_size_title)
         preferenceBufferSize.setIcon(R.drawable.ic_network_check_24dp)
         preferenceBufferSize.key = Keys.PREF_LARGE_BUFFER_SIZE
@@ -188,23 +159,28 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
 
 
         // set up "Edit Stream Address" preference
-        val preferenceEnableEditingStreamUri = SwitchPreferenceCompat(activity as Context)
+        val preferenceEnableEditingStreamUri = MarqueeSwitchPreference(context)
         preferenceEnableEditingStreamUri.title = getString(R.string.pref_edit_station_stream_title)
         preferenceEnableEditingStreamUri.setIcon(R.drawable.ic_music_note_24dp)
         preferenceEnableEditingStreamUri.key = Keys.PREF_EDIT_STREAMS_URIS
         preferenceEnableEditingStreamUri.summaryOn = getString(R.string.pref_edit_station_stream_summary_enabled)
         preferenceEnableEditingStreamUri.summaryOff = getString(R.string.pref_edit_station_stream_summary_disabled)
-        preferenceEnableEditingStreamUri.setDefaultValue(PreferencesHelper.loadEditStreamUrisEnabled())
+        preferenceEnableEditingStreamUri.setDefaultValue(PreferencesHelper.loadEditStreamUrisEnabled(context))
+        preferenceEnableEditingStreamUri.isEnabled = if (PreferencesHelper.loadEditStationsEnabled(context)) {
+            true
+        } else {
+            PreferencesHelper.loadEditStreamUrisEnabled(context)
+        }
 
 
         // set up "Edit Stations" preference
-        val preferenceEnableEditingGeneral = SwitchPreferenceCompat(activity as Context)
+        val preferenceEnableEditingGeneral = MarqueeSwitchPreference(context)
         preferenceEnableEditingGeneral.title = getString(R.string.pref_edit_station_title)
         preferenceEnableEditingGeneral.setIcon(R.drawable.ic_edit_24dp)
         preferenceEnableEditingGeneral.key = Keys.PREF_EDIT_STATIONS
         preferenceEnableEditingGeneral.summaryOn = getString(R.string.pref_edit_station_summary_enabled)
         preferenceEnableEditingGeneral.summaryOff = getString(R.string.pref_edit_station_summary_disabled)
-        preferenceEnableEditingGeneral.setDefaultValue(PreferencesHelper.loadEditStationsEnabled())
+        preferenceEnableEditingGeneral.setDefaultValue(PreferencesHelper.loadEditStationsEnabled(context))
         preferenceEnableEditingGeneral.setOnPreferenceChangeListener { _, newValue ->
             when (newValue) {
                 true -> {
@@ -218,6 +194,75 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             return@setOnPreferenceChangeListener true
         }
 
+        // set up "Bass Boost" preference
+        val preferenceBassBoost = MarqueeSwitchPreference(context)
+        preferenceBassBoost.title = getString(R.string.pref_bass_boost_title)
+        preferenceBassBoost.setIcon(R.drawable.ic_music_note_24dp)
+        preferenceBassBoost.key = Keys.PREF_BASS_BOOST
+        preferenceBassBoost.isEnabled = currentPreset.isEmpty()
+        preferenceBassBoost.summary = getString(R.string.pref_bass_boost_summary)
+        preferenceBassBoost.setDefaultValue(false)
+
+        // set up "Reverb" preference
+        val preferenceReverb = MarqueeSwitchPreference(context)
+        preferenceReverb.title = getString(R.string.pref_reverb_title)
+        preferenceReverb.setIcon(R.drawable.ic_music_note_24dp)
+        preferenceReverb.key = Keys.PREF_REVERB
+        preferenceReverb.isEnabled = currentPreset.isEmpty()
+        preferenceReverb.summary = getString(R.string.pref_reverb_summary)
+        preferenceReverb.setDefaultValue(false)
+
+        // set up "DRC" preference
+        val preferenceDrc = MarqueeSwitchPreference(context)
+        preferenceDrc.title = getString(R.string.pref_drc_title)
+        preferenceDrc.setIcon(R.drawable.ic_music_note_24dp)
+        preferenceDrc.key = Keys.PREF_DRC
+        preferenceDrc.isEnabled = currentPreset.isEmpty()
+        preferenceDrc.summary = getString(R.string.pref_drc_summary)
+        preferenceDrc.setDefaultValue(true)
+
+        // set up "Preset Selection" preference
+        val preferencePresetSelection = Preference(context)
+        preferencePresetSelection.title = getString(R.string.pref_preset_selection_title)
+        preferencePresetSelection.setIcon(R.drawable.ic_presets_24dp)
+        preferencePresetSelection.key = Keys.PREF_PRESET_SELECTED
+        val presetSummary = currentPreset.ifEmpty {
+            getString(R.string.pref_preset_none)
+        }
+        preferencePresetSelection.summary = "${getString(R.string.pref_preset_selection_summary)}: $presetSummary"
+        preferencePresetSelection.setOnPreferenceClickListener {
+            PresetSelectionDialog(this).show(activity as Context)
+            return@setOnPreferenceClickListener true
+        }
+
+        // Initialize EQ control states based on current preset
+        updateEqControlStates()
+
+        // set up "Equalizer" preference entry
+        val preferenceEqualizer = Preference(context)
+        preferenceEqualizer.title = getString(R.string.pref_equalizer_title)
+        preferenceEqualizer.setIcon(R.drawable.ic_equalizer_24dp)
+        preferenceEqualizer.key = Keys.PREF_EQUALIZER
+        if (currentPreset.isEmpty()) {
+            preferenceEqualizer.summary = getString(R.string.pref_equalizer_summary)
+            preferenceEqualizer.isEnabled = true
+        } else {
+            preferenceEqualizer.summary = getString(R.string.pref_equalizer_summary_off)
+            preferenceEqualizer.isEnabled = false
+        }
+        preferenceEqualizer.setOnPreferenceClickListener {
+            findNavController().navigate(R.id.action_settings_to_equalizer)
+            return@setOnPreferenceClickListener true
+        }
+
+        val preferenceVisualizer = Preference(context)
+        preferenceVisualizer.title = getString(R.string.pref_visualizer_title)
+        preferenceVisualizer.setIcon(R.drawable.ic_visualizer_24dp)
+        preferenceVisualizer.summary = getString(R.string.pref_visualizer_summary)
+        preferenceVisualizer.setOnPreferenceClickListener {
+            findNavController().navigate(R.id.action_settings_to_visualizer)
+            return@setOnPreferenceClickListener true
+        }
 
         // set up "App Version" preference
         val preferenceAppVersion = Preference(context)
@@ -229,10 +274,7 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             val clip: ClipData = ClipData.newPlainText("simple text", preferenceAppVersion.summary)
             val cm: ClipboardManager = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
             cm.setPrimaryClip(clip)
-            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
-                // since API 33 (TIRAMISU) the OS displays its own notification when content is copied to the clipboard
-                Snackbar.make(requireView(), R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
-            }
+            Snackbar.make(requireView(), R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
             return@setOnPreferenceClickListener true
         }
 
@@ -267,58 +309,153 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             return@setOnPreferenceClickListener true
         }
 
+        val preferenceLanguageSelection = Preference(context)
+        preferenceLanguageSelection.title = getString(R.string.pref_language_selection_title)
+        preferenceLanguageSelection.setIcon(R.drawable.ic_language_24dp)
+        preferenceLanguageSelection.key = Keys.PREF_LANGUAGE_SELECTED
+        preferenceLanguageSelection.summary = "${getString(R.string.pref_language_selection_summary)}: ${
+            LanguageHelper.getCurrentLanguage(activity as Context)
+        }"
+        preferenceLanguageSelection.setOnPreferenceClickListener {
+            LanguageSelectionDialog(this).show(activity as Context)
+            return@setOnPreferenceClickListener true
+        }
+
 
         // set preference categories
         val preferenceCategoryGeneral = PreferenceCategory(activity as Context)
         preferenceCategoryGeneral.title = getString(R.string.pref_general_title)
-        preferenceCategoryGeneral.contains(preferenceThemeSelection)
+
+        val preferenceCategoryAudioEffects = PreferenceCategory(context)
+        preferenceCategoryAudioEffects.title = getString(R.string.pref_audio_effects_title)
 
         val preferenceCategoryMaintenance = PreferenceCategory(activity as Context)
         preferenceCategoryMaintenance.title = getString(R.string.pref_maintenance_title)
-        preferenceCategoryMaintenance.contains(preferenceUpdateStationImages)
-//        preferenceCategoryMaintenance.contains(preferenceUpdateCollection)
 
         val preferenceCategoryImportExport = PreferenceCategory(activity as Context)
         preferenceCategoryImportExport.title = getString(R.string.pref_backup_import_export_title)
-        preferenceCategoryImportExport.contains(preferenceM3uExport)
-        preferenceCategoryImportExport.contains(preferencePlsExport)
-        preferenceCategoryImportExport.contains(preferenceBackupCollection)
-        preferenceCategoryImportExport.contains(preferenceRestoreCollection)
 
         val preferenceCategoryAdvanced = PreferenceCategory(activity as Context)
         preferenceCategoryAdvanced.title = getString(R.string.pref_advanced_title)
-        preferenceCategoryAdvanced.contains(preferenceBufferSize)
-        preferenceCategoryAdvanced.contains(preferenceEnableEditingGeneral)
-        preferenceCategoryAdvanced.contains(preferenceEnableEditingStreamUri)
 
         val preferenceCategoryLinks = PreferenceCategory(context)
         preferenceCategoryLinks.title = getString(R.string.pref_links_title)
-        preferenceCategoryLinks.contains(preferenceAppVersion)
-        preferenceCategoryLinks.contains(preferenceGitHub)
 
 
         // setup preference screen
         screen.addPreference(preferenceAppVersion)
-        screen.addPreference(preferenceLicense)
+
         screen.addPreference(preferenceCategoryGeneral)
-        screen.addPreference(preferenceThemeSelection)
+        preferenceCategoryGeneral.addPreference(preferenceThemeSelection)
+        preferenceCategoryGeneral.addPreference(preferenceLanguageSelection)
+
+        screen.addPreference(preferenceCategoryAudioEffects)
+        preferenceCategoryAudioEffects.addPreference(preferenceBassBoost)
+        preferenceCategoryAudioEffects.addPreference(preferenceReverb)
+        preferenceCategoryAudioEffects.addPreference(preferenceDrc)
+        preferenceCategoryAudioEffects.addPreference(preferencePresetSelection)
+        preferenceCategoryAudioEffects.addPreference(preferenceEqualizer)
+        preferenceCategoryAudioEffects.addPreference(preferenceVisualizer)
+
         screen.addPreference(preferenceCategoryMaintenance)
-        screen.addPreference(preferenceUpdateStationImages)
-        screen.addPreference(preferenceUpdateCollection)
+        preferenceCategoryMaintenance.addPreference(preferenceUpdateStationImages)
+        preferenceCategoryMaintenance.addPreference(preferenceUpdateCollection)
+
         screen.addPreference(preferenceCategoryImportExport)
-        screen.addPreference(preferenceM3uExport)
-        screen.addPreference(preferencePlsExport)
-        screen.addPreference(preferenceBackupCollection)
-        screen.addPreference(preferenceRestoreCollection)
+        preferenceCategoryImportExport.addPreference(preferenceM3uExport)
+        preferenceCategoryImportExport.addPreference(preferencePlsExport)
+        preferenceCategoryImportExport.addPreference(preferenceBackupCollection)
+        preferenceCategoryImportExport.addPreference(preferenceRestoreCollection)
+
         screen.addPreference(preferenceCategoryAdvanced)
-        screen.addPreference(preferenceBufferSize)
-        screen.addPreference(preferenceEnableEditingGeneral)
-        screen.addPreference(preferenceEnableEditingStreamUri)
+        preferenceCategoryAdvanced.addPreference(preferenceBufferSize)
+        preferenceCategoryAdvanced.addPreference(preferenceEnableEditingGeneral)
+        preferenceCategoryAdvanced.addPreference(preferenceEnableEditingStreamUri)
+
         screen.addPreference(preferenceCategoryLinks)
-        screen.addPreference(preferenceGitHub)
+        preferenceCategoryLinks.addPreference(preferenceGitHub)
+        preferenceCategoryLinks.addPreference(preferenceLicense)
+
         preferenceScreen = screen
     }
 
+    /* Overrides onThemeSelectionDialog from ThemeSelectionDialogListener */
+    override fun onThemeSelectionDialog(dialogResult: Boolean, selectedTheme: String) {
+        if (dialogResult) {
+            // update summary
+            val themes = arrayOf(
+                getString(R.string.pref_theme_selection_mode_device_default),
+                getString(R.string.pref_theme_selection_mode_light),
+                getString(R.string.pref_theme_selection_mode_dark)
+            )
+            val themeValues = arrayOf(
+                Keys.STATE_THEME_FOLLOW_SYSTEM,
+                Keys.STATE_THEME_LIGHT_MODE,
+                Keys.STATE_THEME_DARK_MODE
+            )
+            val index = themeValues.indexOf(selectedTheme)
+            val preferenceThemeSelection = findPreference<Preference>(Keys.PREF_THEME_SELECTION)
+            preferenceThemeSelection?.summary = "${getString(R.string.pref_theme_selection_summary)} ${themes[index]}"
+        }
+    }
+
+
+    /* Overrides onPresetSelectionDialog from PresetSelectionDialogListener */
+    override fun onPresetSelectionDialog(dialogResult: Boolean, selectedPreset: String) {
+        if (dialogResult) {
+            // update summary
+            val presetPreference = findPreference<Preference>(Keys.PREF_PRESET_SELECTED)
+            val presetSummary = selectedPreset.ifEmpty {
+                getString(R.string.pref_preset_none)
+            }
+            presetPreference?.summary = "${getString(R.string.pref_preset_selection_summary)}: $presetSummary"
+
+            // Enable/disable manual EQ controls based on preset selection
+            updateEqControlStates()
+        }
+    }
+
+    /* Overrides onLanguageSelectionDialog from LanguageSelectionDialogListener */
+    override fun onLanguageSelectionDialog(dialogResult: Boolean, selectedLanguage: String) {
+        if (dialogResult) {
+            // update summary
+            val languagePreference = findPreference<Preference>(Keys.PREF_LANGUAGE_SELECTED)
+            val languageSummary = if (selectedLanguage.isEmpty()) {
+                getString(R.string.pref_language_system)
+            } else {
+                LanguageHelper.getCurrentLanguage(activity as Context)
+            }
+            languagePreference?.summary = "${getString(R.string.pref_language_selection_summary)}: $languageSummary"
+        }
+    }
+
+    /* Updates the enabled/disabled state of EQ controls based on preset selection */
+    private fun updateEqControlStates() {
+        val currentPreset = PreferencesHelper.loadSelectedPreset()
+        val isPresetSelected = currentPreset.isNotEmpty()
+
+        // Update Bass Boost
+        findPreference<Preference>(Keys.PREF_BASS_BOOST)?.isEnabled = !isPresetSelected
+
+        // Update Reverb
+        findPreference<Preference>(Keys.PREF_REVERB)?.isEnabled = !isPresetSelected
+
+        // Update DRC
+        findPreference<Preference>(Keys.PREF_DRC)?.isEnabled = !isPresetSelected
+
+        // Update Equalizer with proper key
+        val preferenceEqualizer = findPreference<Preference>(Keys.PREF_EQUALIZER)
+        if (preferenceEqualizer != null) {
+            if (isPresetSelected) {
+                preferenceEqualizer.summary = getString(R.string.pref_equalizer_summary_off)
+                preferenceEqualizer.isEnabled = false
+            } else {
+                preferenceEqualizer.summary = getString(R.string.pref_equalizer_summary)
+                preferenceEqualizer.isEnabled = true
+            }
+        }
+    }
+
 
     /* Overrides onYesNoDialog from YesNoDialogListener */
     override fun onYesNoDialog(
@@ -427,9 +564,9 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             val sourceUri: Uri? = result.data?.data
             if (sourceUri != null) {
                 // open and import OPML in player fragment
-                val bundle: Bundle = bundleOf(
-                    Keys.ARG_RESTORE_COLLECTION to "$sourceUri"
-                )
+                val bundle = Bundle().apply {
+                    putString(Keys.ARG_RESTORE_COLLECTION, "$sourceUri")
+                }
                 this.findNavController().navigate(R.id.player_destination, bundle)
             }
         }
@@ -445,7 +582,9 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
                 Snackbar.LENGTH_LONG
             ).show()
             // update collection in player screen
-            val bundle: Bundle = bundleOf(Keys.ARG_UPDATE_COLLECTION to true)
+            val bundle = Bundle().apply {
+                putBoolean(Keys.ARG_UPDATE_COLLECTION, true)
+            }
             this.findNavController().navigate(R.id.player_destination, bundle)
         } else {
             ErrorDialog().show(
@@ -466,9 +605,9 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
                 Snackbar.LENGTH_LONG
             ).show()
             // update collection in player screen
-            val bundle: Bundle = bundleOf(
-                Keys.ARG_UPDATE_IMAGES to true
-            )
+            val bundle = Bundle().apply {
+                putBoolean(Keys.ARG_UPDATE_IMAGES, true)
+            }
             this.findNavController().navigate(R.id.player_destination, bundle)
         } else {
             ErrorDialog().show(
@@ -502,28 +641,6 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
     }
 
 
-    /* Opens up a file picker to select the save location */
-    private fun openSavePlsDialog() {
-        val intent = Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
-            addCategory(Intent.CATEGORY_OPENABLE)
-            type = Keys.MIME_TYPE_PLS
-
-            val timeStamp: String
-            val dateFormat = SimpleDateFormat("_yyyy-MM-dd'T'HH_mm", Locale.US)
-            timeStamp = dateFormat.format(Date())
-
-            putExtra(Intent.EXTRA_TITLE, "collection$timeStamp.pls")
-        }
-        // file gets saved in the ActivityResult
-        try {
-            requestSavePlsLauncher.launch(intent)
-        } catch (exception: Exception) {
-            Log.e(TAG, "Unable to save PLS.\n$exception")
-            Snackbar.make(requireView(), R.string.toastmessage_install_file_helper, Snackbar.LENGTH_LONG).show()
-        }
-    }
-
-
     /* Opens up a file picker to select the backup location */
     private fun openBackupCollectionDialog() {
         val intent = Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
@@ -558,7 +675,26 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             requestRestoreCollectionLauncher.launch(intent)
         } catch (exception: Exception) {
             Log.e(TAG, "Unable to open file picker for ZIP.\n$exception")
-            // Toast.makeText(activity as Context, R.string.toast_message_install_file_helper, Toast.LENGTH_LONG).show()
+        }
+    }
+
+    private fun openSavePlsDialog() {
+        val intent = Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
+            addCategory(Intent.CATEGORY_OPENABLE)
+            type = Keys.MIME_TYPE_PLS
+
+            val timeStamp: String
+            val dateFormat = SimpleDateFormat("_yyyy-MM-dd'T'HH_mm", Locale.US)
+            timeStamp = dateFormat.format(Date())
+
+            putExtra(Intent.EXTRA_TITLE, "collection$timeStamp.pls")
+        }
+        // file gets saved in the ActivityResult
+        try {
+            requestSavePlsLauncher.launch(intent)
+        } catch (exception: Exception) {
+            Log.e(TAG, "Unable to save PLS.\n$exception")
+            Snackbar.make(requireView(), R.string.toastmessage_install_file_helper, Snackbar.LENGTH_LONG).show()
         }
     }
 }

app/src/main/java/com/michatec/radio/VisualizerFragment.kt

@@ -0,0 +1,122 @@
+package com.michatec.radio
+
+import android.content.ComponentName
+import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.util.Log
+import android.view.View
+import androidx.annotation.OptIn
+import androidx.appcompat.app.AppCompatActivity
+import androidx.media3.common.util.UnstableApi
+import androidx.media3.session.MediaController
+import androidx.media3.session.SessionToken
+import androidx.preference.PreferenceFragmentCompat
+import com.google.common.util.concurrent.ListenableFuture
+import com.google.common.util.concurrent.MoreExecutors
+import com.michatec.radio.extensions.requestVisualizerData
+import com.michatec.radio.helpers.ExtrasHelper
+
+/*
+ * VisualizerFragment class: Handles audio visualization
+ */
+@OptIn(UnstableApi::class)
+class VisualizerFragment : PreferenceFragmentCompat() {
+
+    private val TAG = "VisualizerFragment"
+    private lateinit var controllerFuture: ListenableFuture<MediaController>
+    private val controller: MediaController?
+        get() = if (this::controllerFuture.isInitialized && controllerFuture.isDone) {
+            try { controllerFuture.get() } catch (_: Exception) { null }
+        } else null
+
+    private var visualizerPref: ExtrasHelper.VisualizerPreference? = null
+    private val handler = Handler(Looper.getMainLooper())
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        (activity as AppCompatActivity).supportActionBar?.title = getString(R.string.pref_visualizer_title)
+        (activity as AppCompatActivity).supportActionBar?.show()
+    }
+
+    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
+        val context = preferenceManager.context
+        val screen = preferenceManager.createPreferenceScreen(context)
+        
+        visualizerPref = ExtrasHelper.VisualizerPreference(context)
+        visualizerPref?.key = "visualizer_key"
+        screen.addPreference(visualizerPref!!)
+
+        preferenceScreen = screen
+    }
+
+    override fun onStart() {
+        super.onStart()
+        initializeController()
+    }
+
+    override fun onStop() {
+        super.onStop()
+        releaseController()
+    }
+
+    override fun onResume() {
+        super.onResume()
+        startPolling()
+    }
+
+    override fun onPause() {
+        super.onPause()
+        stopPolling()
+    }
+
+    private fun initializeController() {
+        controllerFuture = MediaController.Builder(
+            requireContext(),
+            SessionToken(requireContext(), ComponentName(requireContext(), PlayerService::class.java))
+        ).buildAsync()
+        controllerFuture.addListener({
+            Log.d(TAG, "MediaController connected: ${controller != null}")
+        }, MoreExecutors.directExecutor())
+    }
+
+    private fun releaseController() {
+        if (this::controllerFuture.isInitialized) {
+            MediaController.releaseFuture(controllerFuture)
+        }
+    }
+
+    private val pollRunnable = object : Runnable {
+        override fun run() {
+            val c = controller
+            if (c != null && c.isPlaying) {
+                val resultFuture = c.requestVisualizerData()
+                resultFuture.addListener({
+                    try {
+                        val result = resultFuture.get()
+                        if (result.resultCode == androidx.media3.session.SessionResult.RESULT_SUCCESS) {
+                            val data = result.extras.getFloatArray(Keys.EXTRA_VISUALIZER_DATA)
+                            if (data != null && data.isNotEmpty()) {
+                                visualizerPref?.update(data)
+                            }
+                        } else {
+                            Log.e(TAG, "Custom command failed with result code: ${result.resultCode}")
+                        }
+                    } catch (e: Exception) {
+                        Log.e(TAG, "Error fetching visualizer data", e)
+                    }
+                }, MoreExecutors.directExecutor())
+            }
+            handler.postDelayed(this, 18) // ~60 FPS
+        }
+    }
+
+    private fun startPolling() {
+        handler.removeCallbacks(pollRunnable)
+        handler.post(pollRunnable)
+    }
+
+    private fun stopPolling() {
+        handler.removeCallbacks(pollRunnable)
+    }
+}

app/src/main/java/com/michatec/radio/collection/CollectionAdapter.kt

@@ -1,17 +1,3 @@
-/*
- * CollectionAdapter.kt
- * Implements the CollectionAdapter class
- * A CollectionAdapter is a custom adapter providing station card views for a RecyclerView
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.collection
 
 import android.annotation.SuppressLint
@@ -19,15 +5,16 @@ import android.content.Context
 import android.content.SharedPreferences
 import android.text.Editable
 import android.text.TextWatcher
+import android.view.KeyEvent
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
+import android.widget.CheckBox
 import android.widget.ImageView
 import android.widget.ProgressBar
 import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
-import androidx.cardview.widget.CardView
 import androidx.constraintlayout.widget.Group
 import androidx.core.net.toUri
 import androidx.core.view.isGone
@@ -38,6 +25,7 @@ import androidx.navigation.findNavController
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.button.MaterialButton
+import com.google.android.material.card.MaterialCardView
 import com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
 import com.google.android.material.textfield.TextInputEditText
 import com.michatec.radio.Keys
@@ -62,11 +50,12 @@ class CollectionAdapter(
     /* Main class variables */
     private lateinit var collectionViewModel: CollectionViewModel
     private var collection: Collection = Collection()
-    private var editStationsEnabled: Boolean = PreferencesHelper.loadEditStationsEnabled()
-    private var editStationStreamsEnabled: Boolean = PreferencesHelper.loadEditStreamUrisEnabled()
+    private var editStationsEnabled: Boolean = PreferencesHelper.loadEditStationsEnabled(context)
+    private var editStationStreamsEnabled: Boolean = PreferencesHelper.loadEditStreamUrisEnabled(context)
     private var expandedStationUuid: String = PreferencesHelper.loadStationListStreamUuid()
     private var expandedStationPosition: Int = -1
     var isExpandedForEdit: Boolean = false
+    private var reorderStationUuid: String = ""
 
 
     /* Listener Interface */
@@ -179,6 +168,9 @@ class CollectionAdapter(
                 addNewViewHolder.settingsButtonView.setOnClickListener {
                     it.findNavController().navigate(R.id.settings_destination)
                 }
+                addNewViewHolder.visualizerButtonView.setOnClickListener {
+                    it.findNavController().navigate(R.id.visualizer_destination)
+                }
             }
             // CASE STATION CARD
             is StationViewHolder -> {
@@ -187,7 +179,6 @@ class CollectionAdapter(
 
                 // get reference to StationViewHolder
                 val stationViewHolder: StationViewHolder = holder
-
                 // set up station views
                 setStarredIcon(stationViewHolder, station)
                 setStationName(stationViewHolder, station)
@@ -197,6 +188,14 @@ class CollectionAdapter(
                 setPlaybackProgress(stationViewHolder, station)
                 setDownloadProgress(stationViewHolder, station)
 
+                if (reorderStationUuid == station.uuid) {
+                    stationViewHolder.reorderCheckbox.isVisible = true
+                    stationViewHolder.reorderCheckbox.isChecked = true
+                } else {
+                    stationViewHolder.reorderCheckbox.isGone = true
+                    stationViewHolder.reorderCheckbox.isChecked = false
+                }
+
                 // show / hide edit views
                 when (expandedStationPosition) {
                     // show edit views
@@ -214,6 +213,8 @@ class CollectionAdapter(
                             stationViewHolder.stationNameEditView.imeOptions =
                                 EditorInfo.IME_ACTION_DONE
                         }
+                        // Allow internal focus
+                        stationViewHolder.stationCardView.descendantFocusability = ViewGroup.FOCUS_AFTER_DESCENDANTS
                     }
                     // hide edit views
                     else -> {
@@ -222,6 +223,8 @@ class CollectionAdapter(
                         stationViewHolder.stationStarredView.isVisible = station.starred
                         stationViewHolder.editViews.isGone = true
                         stationViewHolder.stationUriEditView.isGone = true
+                        // Block internal focus
+                        stationViewHolder.stationCardView.descendantFocusability = ViewGroup.FOCUS_BLOCK_DESCENDANTS
                     }
                 }
             }
@@ -319,8 +322,24 @@ class CollectionAdapter(
         }
     }
 
+    /* Shows / hides the reorder highlight for a station */
+    private fun toggleReorderMode(position: Int, stationUuid: String) {
+        if (reorderStationUuid == stationUuid) {
+            reorderStationUuid = ""
+            saveCollectionAfterDragDrop()
+        } else {
+            // collapse edit views if necessary
+            if (isExpandedForEdit) {
+                toggleEditViews(expandedStationPosition, expandedStationUuid)
+            }
+            reorderStationUuid = stationUuid
+        }
+        notifyItemChanged(position)
+    }
+
 
     /* Shows / hides the edit view for a station */
+    /* TODO: Remove @SuppressLint("NotifyDataSetChanged"), remove NotifyDataSetChanged */
     @SuppressLint("NotifyDataSetChanged")
     private fun toggleEditViews(position: Int, stationUuid: String) {
         when (stationUuid) {
@@ -354,12 +373,16 @@ class CollectionAdapter(
         when (station.starred) {
             true -> {
                 if (station.imageColor != -1) {
-                    // stationViewHolder.stationCardView.setCardBackgroundColor(station.imageColor)
                     stationViewHolder.stationStarredView.setColorFilter(station.imageColor)
+                } else {
+                    stationViewHolder.stationStarredView.clearColorFilter()
                 }
                 stationViewHolder.stationStarredView.isVisible = true
             }
-            false -> stationViewHolder.stationStarredView.isGone = true
+            false -> {
+                stationViewHolder.stationStarredView.clearColorFilter()
+                stationViewHolder.stationStarredView.isGone = true
+            }
         }
     }
 
@@ -387,6 +410,8 @@ class CollectionAdapter(
             false -> stationViewHolder.playButtonView.visibility = View.INVISIBLE
         }
         stationViewHolder.stationCardView.setOnClickListener {
+            if (reorderStationUuid.isNotEmpty()) return@setOnClickListener
+            if (expandedStationPosition == stationViewHolder.bindingAdapterPosition) return@setOnClickListener
             collectionAdapterListener.onPlayButtonTapped(station.uuid)
         }
         stationViewHolder.playButtonView.setOnClickListener {
@@ -401,6 +426,68 @@ class CollectionAdapter(
         stationViewHolder.stationImageView.setOnClickListener {
             collectionAdapterListener.onPlayButtonTapped(station.uuid)
         }
+
+        // TV improvement: Allow reordering with DPAD
+        stationViewHolder.stationCardView.setOnKeyListener { _, keyCode, event ->
+            if (event.action == KeyEvent.ACTION_DOWN) {
+                // Reorder mode handling
+                if (reorderStationUuid == station.uuid) {
+                    when (keyCode) {
+                        KeyEvent.KEYCODE_DPAD_UP -> {
+                            val currentPos = stationViewHolder.bindingAdapterPosition
+                            if (currentPos > 0) {
+                                onItemMove(currentPos, currentPos - 1)
+                            }
+                            return@setOnKeyListener true
+                        }
+                        KeyEvent.KEYCODE_DPAD_DOWN -> {
+                            val currentPos = stationViewHolder.bindingAdapterPosition
+                            if (currentPos < collection.stations.size - 1) {
+                                onItemMove(currentPos, currentPos + 1)
+                            }
+                            return@setOnKeyListener true
+                        }
+                        KeyEvent.KEYCODE_NUMPAD_2, KeyEvent.KEYCODE_2, KeyEvent.KEYCODE_PLUS,
+                        KeyEvent.KEYCODE_BACK, KeyEvent.KEYCODE_ENTER, KeyEvent.KEYCODE_DPAD_CENTER -> {
+                            toggleReorderMode(stationViewHolder.bindingAdapterPosition, station.uuid)
+                            return@setOnKeyListener true
+                        }
+                        else -> return@setOnKeyListener true // Consume other keys in reorder mode
+                    }
+                }
+
+                when (keyCode) {
+                    KeyEvent.KEYCODE_DPAD_LEFT -> {
+                        if (editStationsEnabled && expandedStationPosition != stationViewHolder.bindingAdapterPosition) {
+                            val position: Int = stationViewHolder.bindingAdapterPosition
+                            toggleEditViews(position, station.uuid)
+                            return@setOnKeyListener true
+                        }
+                    }
+                    KeyEvent.KEYCODE_NUMPAD_3, KeyEvent.KEYCODE_3, KeyEvent.KEYCODE_BACK -> {
+                        if (expandedStationPosition == stationViewHolder.bindingAdapterPosition) {
+                            val position: Int = stationViewHolder.bindingAdapterPosition
+                            toggleEditViews(position, station.uuid)
+                            return@setOnKeyListener true
+                        }
+                    }
+                    KeyEvent.KEYCODE_NUMPAD_0, KeyEvent.KEYCODE_0, KeyEvent.KEYCODE_DEL -> {
+                        removeStation(context, stationViewHolder.bindingAdapterPosition)
+                        return@setOnKeyListener true
+                    }
+                    KeyEvent.KEYCODE_NUMPAD_1, KeyEvent.KEYCODE_1, KeyEvent.KEYCODE_SPACE -> {
+                        toggleStarredStation(context, stationViewHolder.bindingAdapterPosition)
+                        return@setOnKeyListener true
+                    }
+                    KeyEvent.KEYCODE_NUMPAD_2, KeyEvent.KEYCODE_2, KeyEvent.KEYCODE_PLUS -> {
+                        toggleReorderMode(stationViewHolder.bindingAdapterPosition, station.uuid)
+                        return@setOnKeyListener true
+                    }
+                }
+            }
+            false
+        }
+
         stationViewHolder.playButtonView.setOnLongClickListener {
             if (editStationsEnabled) {
                 val position: Int = stationViewHolder.bindingAdapterPosition
@@ -649,9 +736,9 @@ class CollectionAdapter(
         SharedPreferences.OnSharedPreferenceChangeListener { _, key ->
             when (key) {
                 Keys.PREF_EDIT_STATIONS -> editStationsEnabled =
-                    PreferencesHelper.loadEditStationsEnabled()
+                    PreferencesHelper.loadEditStationsEnabled(context)
                 Keys.PREF_EDIT_STREAMS_URIS -> editStationStreamsEnabled =
-                    PreferencesHelper.loadEditStreamUrisEnabled()
+                    PreferencesHelper.loadEditStreamUrisEnabled(context)
             }
         }
     /*
@@ -668,6 +755,8 @@ class CollectionAdapter(
             listItemAddNewLayout.findViewById(R.id.card_add_new_station)
         val settingsButtonView: ExtendedFloatingActionButton =
             listItemAddNewLayout.findViewById(R.id.card_settings)
+        val visualizerButtonView: ExtendedFloatingActionButton =
+            listItemAddNewLayout.findViewById(R.id.card_visualizer)
     }
     /*
      * End of inner class
@@ -679,14 +768,14 @@ class CollectionAdapter(
      */
     private class StationViewHolder(stationCardLayout: View) :
         RecyclerView.ViewHolder(stationCardLayout) {
-        val stationCardView: CardView = stationCardLayout.findViewById(R.id.station_card)
+        val stationCardView: MaterialCardView = stationCardLayout.findViewById(R.id.station_card)
         val stationImageView: ImageView = stationCardLayout.findViewById(R.id.station_icon)
         val stationNameView: TextView = stationCardLayout.findViewById(R.id.station_name)
         val stationStarredView: ImageView = stationCardLayout.findViewById(R.id.starred_icon)
+        val reorderCheckbox: CheckBox = stationCardLayout.findViewById(R.id.reorder_checkbox)
         val bufferingProgress: ProgressBar = stationCardLayout.findViewById(R.id.buffering_progress)
         val downloadProgress: ProgressBar = stationCardLayout.findViewById(R.id.download_progress)
 
-        //        val menuButtonView: ImageView = stationCardLayout.findViewById(R.id.menu_button)
         val playButtonView: ImageView = stationCardLayout.findViewById(R.id.playback_button)
         val editViews: Group = stationCardLayout.findViewById(R.id.default_edit_views)
         val stationImageChangeView: ImageView =

app/src/main/java/com/michatec/radio/collection/CollectionViewModel.kt

@@ -1,17 +1,3 @@
-/*
- * CollectionViewModel.kt
- * Implements the CollectionViewModel class
- * A CollectionViewModel stores the collection of stations as live data
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.collection
 
 import android.app.Application

app/src/main/java/com/michatec/radio/core/Collection.kt

@@ -1,16 +1,3 @@
-/*
- * Collection.kt
- * Implements the Collection class
- * A Collection object holds a list of radio stations
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
 package com.michatec.radio.core
 
 import android.os.Parcelable

app/src/main/java/com/michatec/radio/core/Station.kt

@@ -1,17 +1,3 @@
-/*
- * Station.kt
- * Implements the Station class
- * A Station object holds the base data of a radio
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.core
 
 import android.os.Parcelable

app/src/main/java/com/michatec/radio/dialogs/AddStationDialog.kt

@@ -1,22 +1,10 @@
-/*
- * AddStationDialog.kt
- * Implements the AddStationDialog class
- * A AddStationDialog shows a dialog with list of stations to import
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-23 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.dialogs
 
 import android.content.Context
 import android.view.LayoutInflater
+import android.widget.Button
 import androidx.appcompat.app.AlertDialog
+import androidx.core.view.isGone
 import androidx.recyclerview.widget.DefaultItemAnimator
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -45,6 +33,8 @@ class AddStationDialog (
     /* Main class variables */
     private lateinit var dialog: AlertDialog
     private lateinit var stationSearchResultList: RecyclerView
+    private var customPositiveButton: Button? = null
+    private var customNegativeButton: Button? = null
     private lateinit var searchResultAdapter: SearchResultAdapter
     private var station: Station = Station()
 
@@ -73,6 +63,10 @@ class AddStationDialog (
         // set up list of search results
         setupRecyclerView(context)
 
+        // find custom buttons (for TV layout)
+        customPositiveButton = view.findViewById(R.id.dialog_positive_button)
+        customNegativeButton = view.findViewById(R.id.dialog_negative_button)
+
         // add okay ("Add") button
         builder.setPositiveButton(R.string.dialog_find_station_button_add) { _, _ ->
             // listen for click on add button
@@ -88,6 +82,17 @@ class AddStationDialog (
             searchResultAdapter.stopPrePlayback()
         }
 
+        // set up custom buttons if they exist (TV layout)
+        customPositiveButton?.setOnClickListener {
+            listener.onAddStationDialog(station)
+            searchResultAdapter.stopPrePlayback()
+            dialog.dismiss()
+        }
+        customNegativeButton?.setOnClickListener {
+            searchResultAdapter.stopPrePlayback()
+            dialog.dismiss()
+        }
+
         // set dialog view
         builder.setView(view)
 
@@ -95,8 +100,16 @@ class AddStationDialog (
         dialog = builder.create()
         dialog.show()
 
-        // initially disable "Add" button
-        dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        // handle button visibility and state
+        if (customPositiveButton != null) {
+            // hide default buttons if custom ones are used
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).isGone = true
+            dialog.getButton(AlertDialog.BUTTON_NEGATIVE).isGone = true
+            customPositiveButton?.isEnabled = false
+        } else {
+            // initially disable default "Add" button
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        }
     }
 
 
@@ -117,12 +130,14 @@ class AddStationDialog (
     /* Implement activateAddButton to enable the "Add" button */
     override fun activateAddButton() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = true
+        customPositiveButton?.isEnabled = true
     }
 
 
     /* Implement deactivateAddButton to disable the "Add" button */
     override fun deactivateAddButton() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        customPositiveButton?.isEnabled = false
     }
 
 

app/src/main/java/com/michatec/radio/dialogs/ErrorDialog.kt

@@ -1,17 +1,3 @@
-/*
- * ErrorDialog.kt
- * Implements the ErrorDialog class
- * An ErrorDialog shows an error dialog with details
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.dialogs
 
 import android.content.Context

app/src/main/java/com/michatec/radio/dialogs/FindStationDialog.kt

@@ -1,17 +1,3 @@
-/*
- * FindStationDialog.kt
- * Implements the FindStationDialog class
- * A FindStationDialog shows a dialog with search box and list of results
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.dialogs
 
 import android.annotation.SuppressLint
@@ -21,6 +7,7 @@ import android.os.Handler
 import android.os.Looper
 import android.view.LayoutInflater
 import android.view.inputmethod.InputMethodManager
+import android.widget.Button
 import android.widget.ProgressBar
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.widget.SearchView
@@ -63,6 +50,8 @@ class FindStationDialog (
     private lateinit var searchRequestProgressIndicator: ProgressBar
     private lateinit var noSearchResultsTextView: MaterialTextView
     private lateinit var stationSearchResultList: RecyclerView
+    private var customPositiveButton: Button? = null
+    private var customNegativeButton: Button? = null
     private lateinit var searchResultAdapter: SearchResultAdapter
     private lateinit var radioBrowserSearch: RadioBrowserSearch
     private lateinit var directInputCheck: DirectInputCheck
@@ -84,6 +73,7 @@ class FindStationDialog (
 
 
     /* Overrides onRadioBrowserSearchResults from RadioBrowserSearchListener */
+    /* TODO: Remove @SuppressLint("NotifyDataSetChanged"), remove NotifyDataSetChanged */
     @SuppressLint("NotifyDataSetChanged")
     override fun onRadioBrowserSearchResults(results: Array<RadioBrowserResult>) {
         if (results.isNotEmpty()) {
@@ -134,6 +124,10 @@ class FindStationDialog (
         // set up list of search results
         setupRecyclerView(context)
 
+        // find custom buttons (for TV layout)
+        customPositiveButton = view.findViewById(R.id.dialog_positive_button)
+        customNegativeButton = view.findViewById(R.id.dialog_negative_button)
+
         // add okay ("Add") button
         builder.setPositiveButton(R.string.dialog_find_station_button_add) { _, _ ->
             // listen for click on add button
@@ -152,6 +146,18 @@ class FindStationDialog (
             searchResultAdapter.stopPrePlayback()
         }
 
+        // set up custom buttons if they exist (TV layout)
+        customPositiveButton?.setOnClickListener {
+            listener.onFindStationDialog(station)
+            searchResultAdapter.stopPrePlayback()
+            dialog.dismiss()
+        }
+        customNegativeButton?.setOnClickListener {
+            radioBrowserSearch.stopSearchRequest()
+            searchResultAdapter.stopPrePlayback()
+            dialog.dismiss()
+        }
+
         // listen for input
         stationSearchBoxView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
             override fun onQueryTextChange(query: String): Boolean {
@@ -174,10 +180,18 @@ class FindStationDialog (
         dialog = builder.create()
         dialog.show()
 
-        // initially disable "Add" button
-        dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
-        dialog.getButton(AlertDialog.BUTTON_POSITIVE).isAllCaps = true
-        dialog.getButton(AlertDialog.BUTTON_NEGATIVE).isAllCaps = true
+        // handle button visibility and state
+        if (customPositiveButton != null) {
+            // hide default buttons if custom ones are used
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).isGone = true
+            dialog.getButton(AlertDialog.BUTTON_NEGATIVE).isGone = true
+            customPositiveButton?.isEnabled = false
+        } else {
+            // initially disable default "Add" button
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).isAllCaps = true
+            dialog.getButton(AlertDialog.BUTTON_NEGATIVE).isAllCaps = true
+        }
     }
 
 
@@ -242,12 +256,14 @@ class FindStationDialog (
     /* Makes the "Add" button clickable */
     override fun activateAddButton() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = true
+        customPositiveButton?.isEnabled = true
         searchRequestProgressIndicator.isGone = true
         noSearchResultsTextView.isGone = true
     }
 
     override fun deactivateAddButton() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        customPositiveButton?.isEnabled = false
         searchRequestProgressIndicator.isGone = true
         noSearchResultsTextView.isGone = true
     }
@@ -256,6 +272,7 @@ class FindStationDialog (
     /* Resets the dialog layout to default state */
     private fun resetLayout(clearAdapter: Boolean = false) {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        customPositiveButton?.isEnabled = false
         searchRequestProgressIndicator.isGone = true
         noSearchResultsTextView.isGone = true
         searchResultAdapter.resetSelection(clearAdapter)
@@ -265,6 +282,7 @@ class FindStationDialog (
     /* Display the "No Results" error - hide other unneeded views */
     private fun showNoResultsError() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        customPositiveButton?.isEnabled = false
         searchRequestProgressIndicator.isGone = true
         noSearchResultsTextView.isVisible = true
     }
@@ -273,6 +291,7 @@ class FindStationDialog (
     /* Display the "No Results" error - hide other unneeded views */
     private fun showProgressIndicator() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        customPositiveButton?.isEnabled = false
         searchRequestProgressIndicator.isVisible = true
         noSearchResultsTextView.isGone = true
     }

app/src/main/java/com/michatec/radio/dialogs/LanguageSelectionDialog.kt

@@ -0,0 +1,140 @@
+package com.michatec.radio.dialogs
+
+import android.content.Context
+import android.view.LayoutInflater
+import android.widget.RadioButton
+import android.widget.RadioGroup
+import androidx.appcompat.app.AlertDialog
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import com.michatec.radio.R
+import com.michatec.radio.helpers.PreferencesHelper
+
+
+/*
+ * LanguageSelectionDialog class
+ */
+class LanguageSelectionDialog(private var languageSelectionDialogListener: LanguageSelectionDialogListener) {
+
+    /* Interface used to communicate back to activity */
+    interface LanguageSelectionDialogListener {
+        fun onLanguageSelectionDialog(dialogResult: Boolean, selectedLanguage: String)
+    }
+
+
+    /* Main class variables */
+    private lateinit var dialog: AlertDialog
+
+
+    /* Data class representing a supported language */
+    data class Language(
+        val code: String,
+        val nameResId: Int
+    )
+
+
+    /* List of supported languages - displayed in their own language */
+    private val supportedLanguages = listOf(
+        Language("system", R.string.pref_language_system),
+        Language("en", R.string.pref_language_en),
+        Language("de", R.string.pref_language_de),
+        Language("fr", R.string.pref_language_fr),
+        Language("ru", R.string.pref_language_ru),
+        Language("ja", R.string.pref_language_ja),
+        Language("nl", R.string.pref_language_nl),
+        Language("pl", R.string.pref_language_pl),
+        Language("el", R.string.pref_language_el),
+        Language("da", R.string.pref_language_da)
+    )
+
+
+    /* Counter for generating unique view IDs */
+    private var viewIdCounter = 0x7F010001 // Starting after android.R.id.home
+
+
+    /* Construct and show dialog */
+    fun show(context: Context) {
+        // prepare dialog builder
+        val builder = MaterialAlertDialogBuilder(context)
+
+        // inflate custom layout
+        val inflater = LayoutInflater.from(context)
+        val view = inflater.inflate(R.layout.dialog_language_selection, null)
+
+        // find radio group
+        val radioGroup = view.findViewById<RadioGroup>(R.id.language_radio_group)
+        val currentLanguage = PreferencesHelper.loadSelectedLanguage()
+
+        // add radio buttons for each supported language
+        for (language in supportedLanguages) {
+            val radioButton = RadioButton(context).apply {
+                id = generateViewId()
+                tag = language.code
+                text = context.getString(language.nameResId)
+                textSize = if (isTelevision(context)) 20f else 16f
+                setPadding(dpToPx(context, 8), dpToPx(context, 16), dpToPx(context, 16), dpToPx(context, 16))
+            }
+            radioGroup.addView(radioButton)
+        }
+
+        // set current selection
+        for (i in 0 until radioGroup.childCount) {
+            val radioButton = radioGroup.getChildAt(i) as RadioButton
+            if (radioButton.tag == currentLanguage) {
+                radioButton.isChecked = true
+                break
+            }
+        }
+
+        // if no language is selected, check the first one (system)
+        if (radioGroup.checkedRadioButtonId == -1) {
+            val firstButton = radioGroup.getChildAt(0) as RadioButton
+            firstButton.isChecked = true
+        }
+
+        // set up radio group listener
+        radioGroup.setOnCheckedChangeListener { _, checkedId ->
+            val selectedButton = radioGroup.findViewById<RadioButton>(checkedId)
+            val selectedLanguageCode = selectedButton?.tag as? String ?: "system"
+
+            // save language selection to preferences
+            PreferencesHelper.saveSelectedLanguage(selectedLanguageCode)
+
+            // notify listener
+            languageSelectionDialogListener.onLanguageSelectionDialog(true, selectedLanguageCode)
+
+            // dismiss dialog
+            dialog.dismiss()
+        }
+
+        // set custom view
+        builder.setView(view)
+
+        // handle outside-click as cancel
+        builder.setOnCancelListener {
+            languageSelectionDialogListener.onLanguageSelectionDialog(false, "")
+        }
+
+        // display dialog
+        dialog = builder.create()
+        dialog.show()
+    }
+
+
+    /* Generate a unique view ID */
+    private fun generateViewId(): Int {
+        return viewIdCounter++
+    }
+
+
+    /* Helper function to check if device is a TV */
+    private fun isTelevision(context: Context): Boolean {
+        val uiMode = context.resources.configuration.uiMode
+        return (uiMode and android.content.res.Configuration.UI_MODE_TYPE_MASK) == android.content.res.Configuration.UI_MODE_TYPE_TELEVISION
+    }
+
+
+    /* Helper function to convert dp to pixels */
+    private fun dpToPx(context: Context, dp: Int): Int {
+        return (dp * context.resources.displayMetrics.density).toInt()
+    }
+}

app/src/main/java/com/michatec/radio/dialogs/PresetSelectionDialog.kt

@@ -0,0 +1,86 @@
+package com.michatec.radio.dialogs
+
+import android.content.Context
+import android.view.LayoutInflater
+import android.widget.RadioButton
+import androidx.appcompat.app.AlertDialog
+import androidx.core.content.ContextCompat.getString
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import com.michatec.radio.R
+import com.michatec.radio.helpers.PreferencesHelper
+
+
+/*
+ * PresetSelectionDialog class
+ */
+class PresetSelectionDialog(private var presetSelectionDialogListener: PresetSelectionDialogListener) {
+
+    /* Interface used to communicate back to activity */
+    interface PresetSelectionDialogListener {
+        fun onPresetSelectionDialog(dialogResult: Boolean, selectedPreset: String)
+    }
+
+
+    /* Main class variables */
+    private lateinit var dialog: AlertDialog
+
+
+    /* Construct and show dialog */
+    fun show(context: Context) {
+        // prepare dialog builder
+        val builder = MaterialAlertDialogBuilder(context)
+
+        // inflate custom layout
+        val inflater = LayoutInflater.from(context)
+        val view = inflater.inflate(R.layout.dialog_preset_selection, null)
+
+        // find radio buttons
+        val radioGroup = view.findViewById<android.widget.RadioGroup>(R.id.preset_radio_group)
+        val radioNone = view.findViewById<RadioButton>(R.id.radio_preset_none)
+        val radioRock = view.findViewById<RadioButton>(R.id.radio_preset_rock)
+        val radioPop = view.findViewById<RadioButton>(R.id.radio_preset_pop)
+        val radioJazz = view.findViewById<RadioButton>(R.id.radio_preset_jazz)
+        val radioFlat = view.findViewById<RadioButton>(R.id.radio_preset_flat)
+
+        // set current selection
+        val currentPreset = PreferencesHelper.loadSelectedPreset()
+        when (currentPreset) {
+            "" -> radioNone.isChecked = true
+            getString(context, R.string.pref_preset_rock) -> radioRock.isChecked = true
+            getString(context, R.string.pref_preset_pop) -> radioPop.isChecked = true
+            getString(context, R.string.pref_preset_jazz) -> radioJazz.isChecked = true
+            getString(context, R.string.pref_preset_flat) -> radioFlat.isChecked = true
+            else -> radioNone.isChecked = true
+        }
+
+        // set up radio group listener
+        radioGroup.setOnCheckedChangeListener { _, checkedId ->
+            val selectedPreset = when (checkedId) {
+                R.id.radio_preset_none -> ""
+                R.id.radio_preset_rock -> getString(context, R.string.pref_preset_rock)
+                R.id.radio_preset_pop -> getString(context, R.string.pref_preset_pop)
+                R.id.radio_preset_jazz -> getString(context, R.string.pref_preset_jazz)
+                R.id.radio_preset_flat -> getString(context, R.string.pref_preset_flat)
+                else -> ""
+            }
+            // save preset selection to preferences
+            PreferencesHelper.saveSelectedPreset(selectedPreset)
+            // notify listener
+            presetSelectionDialogListener.onPresetSelectionDialog(true, selectedPreset)
+            // dismiss dialog
+            dialog.dismiss()
+        }
+
+        // set custom view
+        builder.setView(view)
+
+        // handle outside-click as cancel
+        builder.setOnCancelListener {
+            presetSelectionDialogListener.onPresetSelectionDialog(false, "")
+        }
+
+        // display dialog
+        dialog = builder.create()
+        dialog.show()
+    }
+}

app/src/main/java/com/michatec/radio/dialogs/ThemeSelectionDialog.kt

@@ -0,0 +1,89 @@
+package com.michatec.radio.dialogs
+
+import android.content.Context
+import android.view.LayoutInflater
+import android.widget.RadioButton
+import androidx.appcompat.app.AlertDialog
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import com.michatec.radio.Keys
+import com.michatec.radio.R
+import com.michatec.radio.helpers.AppThemeHelper
+import com.michatec.radio.helpers.PreferencesHelper
+
+
+/*
+ * ThemeSelectionDialog class
+ */
+class ThemeSelectionDialog(private var themeSelectionDialogListener: ThemeSelectionDialogListener) {
+
+    /* Interface used to communicate back to activity */
+    interface ThemeSelectionDialogListener {
+        fun onThemeSelectionDialog(dialogResult: Boolean, selectedTheme: String) {
+        }
+    }
+
+
+    /* Main class variables */
+    private lateinit var dialog: AlertDialog
+
+
+    /* Construct and show dialog */
+    fun show(context: Context) {
+        // prepare dialog builder
+        val builder = MaterialAlertDialogBuilder(context)
+
+        // inflate custom layout
+        val inflater = LayoutInflater.from(context)
+        val view = inflater.inflate(R.layout.dialog_theme_selection, null)
+
+        // find radio buttons
+        val radioGroup = view.findViewById<android.widget.RadioGroup>(R.id.theme_radio_group)
+        val radioFollowSystem = view.findViewById<RadioButton>(R.id.radio_theme_follow_system)
+        val radioLight = view.findViewById<RadioButton>(R.id.radio_theme_light)
+        val radioDark = view.findViewById<RadioButton>(R.id.radio_theme_dark)
+
+        // set current selection
+        val currentTheme = AppThemeHelper.getCurrentTheme(context)
+        when (currentTheme) {
+            context.getString(R.string.pref_theme_selection_mode_device_default) -> {
+                radioFollowSystem.isChecked = true
+            }
+            context.getString(R.string.pref_theme_selection_mode_light) -> {
+                radioLight.isChecked = true
+            }
+            context.getString(R.string.pref_theme_selection_mode_dark) -> {
+                radioDark.isChecked = true
+            }
+        }
+
+        // set up radio group listener
+        radioGroup.setOnCheckedChangeListener { _, checkedId ->
+            val selectedTheme = when (checkedId) {
+                R.id.radio_theme_follow_system -> Keys.STATE_THEME_FOLLOW_SYSTEM
+                R.id.radio_theme_light -> Keys.STATE_THEME_LIGHT_MODE
+                R.id.radio_theme_dark -> Keys.STATE_THEME_DARK_MODE
+                else -> Keys.STATE_THEME_FOLLOW_SYSTEM
+            }
+            // save theme selection to preferences
+            PreferencesHelper.saveThemeSelection(selectedTheme)
+            // apply theme immediately
+            AppThemeHelper.setTheme(selectedTheme)
+            // notify listener
+            themeSelectionDialogListener.onThemeSelectionDialog(true, selectedTheme)
+            // dismiss dialog
+            dialog.dismiss()
+        }
+
+        // set custom view
+        builder.setView(view)
+
+        // handle outside-click as cancel
+        builder.setOnCancelListener {
+            themeSelectionDialogListener.onThemeSelectionDialog(false, Keys.STATE_THEME_FOLLOW_SYSTEM)
+        }
+
+        // display dialog
+        dialog = builder.create()
+        dialog.show()
+    }
+}

app/src/main/java/com/michatec/radio/dialogs/YesNoDialog.kt

@@ -1,17 +1,3 @@
-/*
- * YesNoDialog
- * Implements the YesNoDialog class
- * A YesNoDialog asks the user if he/she wants to do something or not
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.dialogs
 
 import android.content.Context

app/src/main/java/com/michatec/radio/extensions/ArrayListExt.kt

@@ -1,18 +1,3 @@
-/*
- * ArrayListExt.kt
- * Implements the ArrayListExt extension methods
- * Useful extension methods for ArrayLists
- * Source: https://raw.githubusercontent.com/googlesamples/android-UniversalMusicPlayer/master/common/src/main/java/com/example/android/uamp/media/extensions/MediaMetadataCompatExt.kt
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.extensions
 
 

app/src/main/java/com/michatec/radio/extensions/MediaControllerExt.kt

@@ -1,22 +1,7 @@
-/*
- * MediaControllerExt.kt
- * Implements the MediaControllerExt extension methods
- * Useful extension methods for MediaController
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.extensions
 
 import android.content.Context
 import android.os.Bundle
-import androidx.core.os.bundleOf
 import androidx.media3.session.MediaController
 import androidx.media3.session.SessionCommand
 import androidx.media3.session.SessionResult
@@ -50,7 +35,7 @@ fun MediaController.requestSleepTimerRemaining(): ListenableFuture<SessionResult
 }
 
 
-/* Request sleep timer remaining */
+/* Request metadata history */
 fun MediaController.requestMetadataHistory(): ListenableFuture<SessionResult> {
     return sendCustomCommand(
         SessionCommand(Keys.CMD_REQUEST_METADATA_HISTORY, Bundle.EMPTY),
@@ -58,6 +43,14 @@ fun MediaController.requestMetadataHistory(): ListenableFuture<SessionResult> {
     )
 }
 
+/* Request visualizer data */
+fun MediaController.requestVisualizerData(): ListenableFuture<SessionResult> {
+    return sendCustomCommand(
+        SessionCommand(Keys.CMD_GET_VISUALIZER_DATA, Bundle.EMPTY),
+        Bundle.EMPTY
+    )
+}
+
 
 /* Starts playback with a new media item */
 fun MediaController.play(context: Context, station: Station) {
@@ -71,8 +64,11 @@ fun MediaController.play(context: Context, station: Station) {
 
 /* Starts playback with of a stream url */
 fun MediaController.playStreamDirectly(streamUri: String) {
+    val bundle = Bundle().apply {
+        putString(Keys.KEY_STREAM_URI, streamUri)
+    }
     sendCustomCommand(
         SessionCommand(Keys.CMD_PLAY_STREAM, Bundle.EMPTY),
-        bundleOf(Pair(Keys.KEY_STREAM_URI, streamUri))
+        bundle
     )
 }

app/src/main/java/com/michatec/radio/helpers/AppThemeHelper.kt

@@ -1,25 +1,7 @@
-/*
- * AppThemeHelper.kt
- * Implements the AppThemeHelper object
- * A AppThemeHelper can set the different app themes: Light Mode, Dark Mode, Follow System
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
-import android.content.res.TypedArray
 import android.util.Log
-import android.util.TypedValue
-import androidx.annotation.AttrRes
-import androidx.annotation.ColorInt
 import androidx.appcompat.app.AppCompatDelegate
 import com.michatec.radio.Keys
 import com.michatec.radio.R
@@ -33,8 +15,6 @@ object AppThemeHelper {
     /* Define log tag */
     private val TAG: String = AppThemeHelper::class.java.simpleName
 
-    private val sTypedValue = TypedValue()
-
     /* Sets app theme */
     fun setTheme(nightModeState: String) {
         when (nightModeState) {
@@ -76,14 +56,4 @@ object AppThemeHelper {
             else -> context.getString(R.string.pref_theme_selection_mode_device_default)
         }
     }
-
-
-    @ColorInt
-    fun getColor(context: Context, @AttrRes resource: Int): Int {
-        val a: TypedArray = context.obtainStyledAttributes(sTypedValue.data, intArrayOf(resource))
-        val color = a.getColor(0, 0)
-        a.recycle()
-        return color
-    }
-
 }

app/src/main/java/com/michatec/radio/helpers/AudioHelper.kt

@@ -1,17 +1,3 @@
-/*
- * AudioHelper.kt
- * Implements the AudioHelper object
- * A AudioHelper provides helper methods for handling audio files
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.util.Log

app/src/main/java/com/michatec/radio/helpers/BackupHelper.kt

@@ -1,17 +1,3 @@
-/*
- * BackupHelper.kt
- * Implements the BackupHelper object
- * A BackupHelper provides helper methods for backing up and restoring the radio station collection
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.ContentResolver
@@ -67,7 +53,7 @@ object BackupHelper {
         Snackbar.make(view, R.string.toastmessage_restored, Snackbar.LENGTH_LONG).show()
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
-            // bypass "ZipException" for Android 14 or above applications when zip file names contain ".." or start with "/"
+            // bypass "ZipException" for Android 14 or above applications when zip file names contain "." or start with "/"
             dalvik.system.ZipPathValidator.clearCallback()
         }
 

app/src/main/java/com/michatec/radio/helpers/CollectionHelper.kt

@@ -1,17 +1,3 @@
-/*
- * CollectionHelper.kt
- * Implements the CollectionHelper object
- * A CollectionHelper provides helper methods for the collection of stations
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
@@ -313,7 +299,7 @@ object CollectionHelper {
     }
 
 
-    /* Returns the children stations under under root (simple media library structure: root > stations) */
+    /* Returns the children stations under root (simple media library structure: root > stations) */
     fun getChildren(context: Context, collection: Collection): List<MediaItem> {
         val mediaItems: MutableList<MediaItem> = mutableListOf()
         collection.stations.forEach { station ->
@@ -652,18 +638,23 @@ object CollectionHelper {
         }.build()
         // build MediaMetadata
         val mediaMetadata = MediaMetadata.Builder().apply {
+            setTitle(station.name)
             setArtist(station.name)
-            //setTitle(station.name)
+            
+            // Set artwork URI for casting (remote devices need a public URL)
+            if (station.remoteImageLocation.isNotEmpty()) {
+                setArtworkUri(station.remoteImageLocation.toUri())
+            }
+
             /* check for "file://" prevents a crash when an old backup was restored */
             if (station.image.isNotEmpty() && station.image.startsWith("file://")) {
-                //setArtworkUri(station.image.toUri())
                 setArtworkData(station.image.toUri().toFile().readBytes(), MediaMetadata.PICTURE_TYPE_FRONT_COVER)
             } else {
-                //setArtworkUri(Uri.parse(Keys.LOCATION_RESOURCES + R.raw.ic_default_station_image))
                 setArtworkData(ImageHelper.getStationImageAsByteArray(context), MediaMetadata.PICTURE_TYPE_FRONT_COVER)
             }
             setIsBrowsable(false)
             setIsPlayable(true)
+            setMediaType(MediaMetadata.MEDIA_TYPE_RADIO_STATION)
         }.build()
         // build MediaItem and return it
         return MediaItem.Builder().apply {

app/src/main/java/com/michatec/radio/helpers/DateTimeHelper.kt

@@ -1,17 +1,3 @@
-/*
- * DateTimeHelper.kt
- * Implements the DateTimeHelper object
- * A DateTimeHelper provides helper methods for converting Date and Time objects
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.util.Log
@@ -31,14 +17,14 @@ object DateTimeHelper {
 
 
     /* Main class variables */
-    private const val pattern: String = "EEE, dd MMM yyyy HH:mm:ss Z"
-    private val dateFormat: SimpleDateFormat = SimpleDateFormat(pattern, Locale.ENGLISH)
+    private const val PATTERN: String = "EEE, dd MMM yyyy HH:mm:ss Z"
+    private val dateFormat: SimpleDateFormat = SimpleDateFormat(PATTERN, Locale.ENGLISH)
 
 
     /* Converts RFC 2822 string representation of a date to DATE */
     fun convertFromRfc2822(dateString: String): Date {
         val date: Date = try {
-            // parse date string using standard pattern
+            // parse date string using standard PATTERN
             dateFormat.parse((dateString)) ?: Keys.DEFAULT_DATE
         } catch (e: Exception) {
             Log.w(TAG, "Unable to parse. Trying an alternative Date format. $e")
@@ -51,7 +37,7 @@ object DateTimeHelper {
 
     /* Converts a DATE to its RFC 2822 string representation */
     fun convertToRfc2822(date: Date): String {
-        val dateFormat = SimpleDateFormat(pattern, Locale.ENGLISH)
+        val dateFormat = SimpleDateFormat(PATTERN, Locale.ENGLISH)
         return dateFormat.format(date)
     }
 

app/src/main/java/com/michatec/radio/helpers/DownloadFinishedReceiver.kt

@@ -1,17 +1,3 @@
-/*
- * DownloadFinishedReceiver.kt
- * Implements the DownloadFinishedReceiver class
- * A DownloadFinishedReceiver listens for finished downloads
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.app.DownloadManager

app/src/main/java/com/michatec/radio/helpers/DownloadHelper.kt

@@ -1,17 +1,3 @@
-/*
- * DownloadHelper.kt
- * Implements the DownloadHelper object
- * A DownloadHelper provides helper methods for downloading files
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.app.DownloadManager
@@ -384,7 +370,7 @@ object DownloadHelper {
     private fun determineAllowedNetworkTypes(type: Int, ignoreWifiRestriction: Boolean): Int {
         var allowedNetworkTypes: Int =
             (DownloadManager.Request.NETWORK_WIFI or DownloadManager.Request.NETWORK_MOBILE)
-        // restrict download of audio files to WiFi if necessary
+        // restrict download of audio files to Wi-Fi if necessary
         if (type == Keys.FILE_TYPE_AUDIO) {
             if (!ignoreWifiRestriction && !PreferencesHelper.downloadOverMobile()) {
                 allowedNetworkTypes = DownloadManager.Request.NETWORK_WIFI

app/src/main/java/com/michatec/radio/helpers/ExtrasHelper.kt

@@ -0,0 +1,118 @@
+package com.michatec.radio.helpers
+
+import android.content.Context
+import android.util.AttributeSet
+import android.util.Log
+import android.view.Surface
+import android.view.SurfaceHolder
+import android.view.SurfaceView
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import androidx.preference.Preference
+import androidx.preference.PreferenceViewHolder
+import com.michatec.radio.R
+import androidx.core.view.isEmpty
+
+class ExtrasHelper {
+    companion object {
+        private const val TAG = "ExtrasHelper"
+        init {
+            try {
+                System.loadLibrary("extra")
+            } catch (e: Exception) {
+                Log.e(TAG, "Failed to load extra library", e)
+            }
+        }
+
+        @JvmStatic
+        private external fun visualize(surface: Surface, data: FloatArray)
+
+        fun render(surface: Surface, data: FloatArray) {
+            if (!surface.isValid) return
+            try {
+                visualize(surface, data)
+            } catch (e: Exception) {
+                Log.e(TAG, "Native visualize failed", e)
+            }
+        }
+    }
+
+    class VisualizerPreference(context: Context, attrs: AttributeSet? = null) : Preference(context, attrs) {
+        private var visualizerView: VisualizerView? = null
+
+        init {
+            // We can use a standard layout and inject our view
+            layoutResource = R.layout.preference_visualizer
+        }
+
+        override fun onBindViewHolder(holder: PreferenceViewHolder) {
+            super.onBindViewHolder(holder)
+            
+            // Try to find the container in the inflated layout
+            var container = holder.findViewById(R.id.visualizer_container) as? ViewGroup
+
+            // Fallback: If not found by ID, maybe the root is the container?
+            if (container == null && holder.itemView is ViewGroup) {
+                container = holder.itemView as ViewGroup
+            }
+
+            if (container != null) {
+                if (visualizerView == null) {
+                    visualizerView = VisualizerView(context).apply {
+                        layoutParams = ViewGroup.LayoutParams(
+                            ViewGroup.LayoutParams.MATCH_PARENT,
+                            ViewGroup.LayoutParams.MATCH_PARENT
+                        )
+                    }
+                }
+
+                val currentParent = visualizerView?.parent as? ViewGroup
+                if (currentParent != container) {
+                    currentParent?.removeView(visualizerView)
+                    // If we injected into a standard preference, don't clear everything, just add
+                    if (container is FrameLayout || container.isEmpty()) {
+                        container.removeAllViews()
+                    }
+                    container.addView(visualizerView)
+                }
+            } else {
+                Log.e("VisualizerPreference", "Could not find any container to attach VisualizerView!")
+            }
+        }
+
+        fun update(data: FloatArray) {
+            visualizerView?.update(data)
+        }
+    }
+
+    class VisualizerView @JvmOverloads constructor(
+        context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
+    ) : SurfaceView(context, attrs, defStyleAttr), SurfaceHolder.Callback {
+
+        private var surface: Surface? = null
+
+        init {
+            Log.d("VisualizerView", "VisualizerView initialized")
+            holder.addCallback(this)
+        }
+
+        fun update(data: FloatArray) {
+            val s = surface
+            if (s != null && s.isValid) {
+                render(s, data)
+            }
+        }
+
+        override fun surfaceCreated(holder: SurfaceHolder) {
+            surface = holder.surface
+        }
+
+        override fun surfaceChanged(holder: SurfaceHolder, format: Int, width: Int, height: Int) {
+            surface = holder.surface
+        }
+
+        override fun surfaceDestroyed(holder: SurfaceHolder) {
+            surface = null
+        }
+    }
+}

app/src/main/java/com/michatec/radio/helpers/FileHelper.kt

@@ -1,17 +1,3 @@
-/*
- * FileHelper.kt
- * Implements the FileHelper object
- * A FileHelper provides helper methods for reading and writing files from and to device storage
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.app.Activity
@@ -33,7 +19,6 @@ import kotlinx.coroutines.Dispatchers.IO
 import java.io.*
 import java.util.*
 import kotlin.coroutines.resume
-import kotlin.coroutines.suspendCoroutine
 
 
 /*
@@ -292,7 +277,7 @@ object FileHelper {
         collection: Collection,
         lastUpdate: Date
     ) {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             cont.resume(saveCollection(context, collection, lastUpdate))
         }
     }
@@ -311,7 +296,7 @@ object FileHelper {
         originalFileUri: Uri,
         targetFileUri: Uri
     ): Boolean {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             cont.resume(copyFile(context, originalFileUri, targetFileUri))
         }
     }
@@ -319,7 +304,7 @@ object FileHelper {
 
     /* Suspend function: Exports collection of stations as M3U file - local backup copy */
     suspend fun backupCollectionAsM3uSuspended(context: Context, collection: Collection) {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             Log.v(TAG, "Backing up collection as M3U - Thread: ${Thread.currentThread().name}")
             // create M3U string
             val m3uString: String = CollectionHelper.createM3uString(collection)
@@ -338,7 +323,7 @@ object FileHelper {
 
     /* Suspend function: Exports collection of stations as PLS file - local backup copy */
     suspend fun backupCollectionAsPlsSuspended(context: Context, collection: Collection) {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             Log.v(TAG, "Backing up collection as PLS - Thread: ${Thread.currentThread().name}")
             // create PLS string
             val plsString: String = CollectionHelper.createPlsString(collection)

app/src/main/java/com/michatec/radio/helpers/ImageHelper.kt

@@ -1,17 +1,3 @@
-/*
- * ImageHelper.kt
- * Implements the ImageHelper object
- * An ImageHelper provides helper methods for image related operations
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context

app/src/main/java/com/michatec/radio/helpers/LanguageHelper.kt

@@ -0,0 +1,63 @@
+package com.michatec.radio.helpers
+
+import android.app.Activity
+import android.content.Context
+import android.util.Log
+import com.michatec.radio.R
+import java.util.Locale
+
+
+/*
+ * LanguageHelper object
+ */
+object LanguageHelper {
+
+    /* Define log tag */
+    private val TAG: String = LanguageHelper::class.java.simpleName
+
+
+    /* Sets the app language on the activity */
+    fun setLanguage(context: Context, languageCode: String): Boolean {
+        if (languageCode.isEmpty()) {
+            Log.i(TAG, "No language code provided, using system default")
+            return false
+        }
+
+        if (languageCode == "system") {
+            Log.i(TAG, "Reverting to system default locale")
+            if (context is Activity) {
+                context.recreate()
+            }
+            return true
+        }
+
+        val locale = Locale.forLanguageTag(languageCode)
+        Locale.setDefault(locale)
+
+
+        if (context is Activity) {
+            context.recreate()
+        }
+
+        Log.i(TAG, "Locale changed to: $languageCode")
+        return true
+    }
+
+
+    /* Returns a localized resources object */
+    fun getCurrentLanguage(context: Context): String {
+        return when (val languageCode = PreferencesHelper.loadSelectedLanguage()) {
+            "system" -> context.getString(R.string.pref_language_system)
+            "en" -> context.getString(R.string.pref_language_en)
+            "de" -> context.getString(R.string.pref_language_de)
+            "fr" -> context.getString(R.string.pref_language_fr)
+            "ru" -> context.getString(R.string.pref_language_ru)
+            "ja" -> context.getString(R.string.pref_language_ja)
+            "nl" -> context.getString(R.string.pref_language_nl)
+            "pl" -> context.getString(R.string.pref_language_pl)
+            "el" -> context.getString(R.string.pref_language_el)
+            "da" -> context.getString(R.string.pref_language_da)
+            else -> languageCode
+        }
+    }
+}

app/src/main/java/com/michatec/radio/helpers/MarqueeSwitchPreference.kt

@@ -0,0 +1,25 @@
+package com.michatec.radio.helpers
+
+import android.content.Context
+import android.text.TextUtils
+import android.widget.TextView
+import androidx.preference.PreferenceViewHolder
+import androidx.preference.SwitchPreferenceCompat
+
+/*
+ * Custom SwitchPreferenceCompat that enables marquee (scrolling text) for the title
+ */
+class MarqueeSwitchPreference(context: Context) : SwitchPreferenceCompat(context) {
+
+    override fun onBindViewHolder(holder: PreferenceViewHolder) {
+        super.onBindViewHolder(holder)
+        val title = holder.findViewById(android.R.id.title) as? TextView
+        title?.apply {
+            ellipsize = TextUtils.TruncateAt.MARQUEE
+            isSingleLine = true
+            marqueeRepeatLimit = -1 // Repeat indefinitely
+            isSelected = true       // Required for marquee to start
+            setHorizontallyScrolling(true)
+        }
+    }
+}

app/src/main/java/com/michatec/radio/helpers/NativeAudioProcessor.kt

@@ -0,0 +1,129 @@
+package com.michatec.radio.helpers
+
+import android.util.Log
+import androidx.annotation.OptIn
+import androidx.media3.common.C
+import androidx.media3.common.audio.AudioProcessor
+import androidx.media3.common.audio.AudioProcessor.AudioFormat
+import androidx.media3.common.audio.BaseAudioProcessor
+import androidx.media3.common.util.UnstableApi
+import java.nio.ByteBuffer
+import java.nio.ByteOrder
+
+@OptIn(UnstableApi::class)
+class NativeAudioProcessor : BaseAudioProcessor() {
+
+    companion object {
+        private const val TAG = "NativeAudioProcessor"
+        init {
+            try {
+                System.loadLibrary("dsp")
+            } catch (e: Exception) {
+                Log.e(TAG, "Failed to load dsp library", e)
+            }
+        }
+    }
+
+    private var directBuffer: ByteBuffer? = null
+
+    // ===== JNI =====
+    private external fun setSampleRate(sampleRate: Float)
+    private external fun setDrcEnabled(enabled: Boolean)
+    private external fun setReverbMix(mix: Float)
+    private external fun setEqFull(gains: FloatArray)
+    private external fun setBassBoost(gainDb: Float)
+    private external fun setStereoWidth(width: Float)
+    private external fun processAudioDirect(buf: ByteBuffer, size: Int)
+    private external fun getFftData(): FloatArray
+
+    // ===== API =====
+    fun enableDrc(enabled: Boolean) = setDrcEnabled(enabled)
+    fun setReverb(mix: Float) = setReverbMix(mix)
+    fun setEqAll(gains: FloatArray) = setEqFull(gains)
+    fun enableBassBoost(gainDb: Float) = setBassBoost(gainDb)
+    fun setWidth(width: Float) = setStereoWidth(width)
+
+    fun getVisualizer(): FloatArray {
+        val raw = getFftData()
+        val out = FloatArray(raw.size)
+        for (i in raw.indices) out[i] = kotlin.math.log10(1f + raw[i])
+        return out
+    }
+
+    // ===== AudioProcessor Overrides =====
+    override fun onConfigure(inputAudioFormat: AudioFormat): AudioFormat {
+        // Always try to support the input format if it is PCM 16-bit
+        if (inputAudioFormat.encoding != C.ENCODING_PCM_16BIT) {
+            Log.e(TAG, "Unsupported encoding: ${inputAudioFormat.encoding}")
+            throw AudioProcessor.UnhandledAudioFormatException(inputAudioFormat)
+        }
+        // Pass the actual sample rate to native
+        setSampleRate(inputAudioFormat.sampleRate.toFloat())
+        return inputAudioFormat
+    }
+
+    override fun queueInput(inputBuffer: ByteBuffer) {
+        val size = inputBuffer.remaining()
+        if (size == 0) return
+
+        val bufferToProcess: ByteBuffer
+        if (inputBuffer.isDirect) {
+            bufferToProcess = inputBuffer
+        } else {
+            if (directBuffer == null || directBuffer!!.capacity() < size) {
+                directBuffer = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder())
+            }
+            directBuffer!!.clear()
+            inputBuffer.position()
+            directBuffer!!.put(inputBuffer)
+            directBuffer!!.flip()
+            bufferToProcess = directBuffer!!
+        }
+
+        processAudioDirect(bufferToProcess, size)
+
+        val out = replaceOutputBuffer(size)
+        out.order(ByteOrder.nativeOrder())
+        bufferToProcess.position(0)
+        out.put(bufferToProcess)
+        out.flip()
+    }
+
+    override fun onReset() {
+        super.onReset()
+        directBuffer = null
+    }
+
+    // ===== Presets =====
+    fun setPresetRock() {
+        enableDrc(true)
+        setReverb(0.26f)
+        setWidth(1.1f)
+        setEqAll(floatArrayOf(2f, 1f, 0f, -1f, -1f, 0f, 1f, 2f, 2f, 3f))
+        enableBassBoost(0.9f)
+    }
+
+    fun setPresetPop() {
+        enableDrc(true)
+        setReverb(0.18f)
+        setWidth(1.05f)
+        setEqAll(floatArrayOf(0f, 1f, 1f, 1f, 0f, 0f, 1f, 2f, 2f, 1f))
+        enableBassBoost(0.6f)
+    }
+
+    fun setPresetJazz() {
+        enableDrc(false)
+        setReverb(0.15f)
+        setWidth(0.8f)
+        setEqAll(floatArrayOf(0f, 0f, 1f, 1f, 0f, 0f, 1f, 1f, 0f, 0f))
+        enableBassBoost(0.2f)
+    }
+
+    fun setPresetFlat() {
+        enableDrc(false)
+        setReverb(0f)
+        setWidth(1f)
+        setEqAll(FloatArray(10))
+        enableBassBoost(0f)
+    }
+}

app/src/main/java/com/michatec/radio/helpers/NetworkHelper.kt

@@ -1,17 +1,3 @@
-/*
- * NetworkHelper.kt
- * Implements the NetworkHelper object
- * A NetworkHelper provides helper methods for network related operations
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
@@ -19,13 +5,13 @@ import android.net.ConnectivityManager
 import android.net.Network
 import android.util.Log
 import com.michatec.radio.Keys
+import kotlinx.coroutines.suspendCancellableCoroutine
 import java.net.HttpURLConnection
 import java.net.InetAddress
 import java.net.URL
 import java.net.UnknownHostException
 import java.util.*
 import kotlin.coroutines.resume
-import kotlin.coroutines.suspendCoroutine
 
 
 /*
@@ -105,7 +91,7 @@ object NetworkHelper {
 
     /* Suspend function: Detects content type (mime type) from given URL string - async using coroutine */
     suspend fun detectContentTypeSuspended(urlString: String): ContentType {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             cont.resume(detectContentType(urlString))
         }
     }
@@ -113,7 +99,7 @@ object NetworkHelper {
 
     /* Suspend function: Gets a random radio-browser.info api address - async using coroutine */
     suspend fun getRadioBrowserServerSuspended(): String {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             val serverAddress: String = try {
                 // get all available radio browser servers
                 val serverAddressList: Array<InetAddress> =
@@ -129,7 +115,7 @@ object NetworkHelper {
     }
 
 
-    /* Creates a http connection from given url string */
+    /* Creates an http connection from given url string */
     private fun createConnection(urlString: String, redirectCount: Int = 0): HttpURLConnection? {
         var connection: HttpURLConnection? = null
 

app/src/main/java/com/michatec/radio/helpers/PreferencesHelper.kt

@@ -1,21 +1,8 @@
-/*
- * PreferencesHelper.kt
- * Implements the PreferencesHelper object
- * A PreferencesHelper provides helper methods for the saving and loading values from shared preferences
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
 import android.content.SharedPreferences
+import android.content.pm.PackageManager
 import android.util.Log
 import androidx.core.content.edit
 import androidx.preference.PreferenceManager
@@ -222,14 +209,24 @@ object PreferencesHelper {
     }
 
 
+    /* Save currently selected app theme */
+    fun saveThemeSelection(theme: String) {
+        sharedPreferences.edit {
+            putString(Keys.PREF_THEME_SELECTION, theme)
+        }
+    }
+
+
     /* Loads value of the option: Edit Stations */
-    fun loadEditStationsEnabled(): Boolean {
-        return sharedPreferences.getBoolean(Keys.PREF_EDIT_STATIONS, true)
+    fun loadEditStationsEnabled(context: Context): Boolean {
+        val defaultValue = !context.packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)
+        return sharedPreferences.getBoolean(Keys.PREF_EDIT_STATIONS, defaultValue)
     }
 
     /* Loads value of the option: Edit Station Streams */
-    fun loadEditStreamUrisEnabled(): Boolean {
-        return sharedPreferences.getBoolean(Keys.PREF_EDIT_STREAMS_URIS, true)
+    fun loadEditStreamUrisEnabled(context: Context): Boolean {
+        val defaultValue = !context.packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)
+        return sharedPreferences.getBoolean(Keys.PREF_EDIT_STREAMS_URIS, defaultValue)
     }
 
 
@@ -257,4 +254,112 @@ object PreferencesHelper {
         )
     }
 
+
+    /* Loads Bass Boost gain */
+    fun loadBassBoost(): Float {
+        return if (sharedPreferences.getBoolean(Keys.PREF_BASS_BOOST, false)) 1f else 0.0f
+    }
+
+
+    /* Loads Reverb mix */
+    fun loadReverb(): Float {
+        return if (sharedPreferences.getBoolean(Keys.PREF_REVERB, false)) 0.3f else 0.0f
+    }
+
+
+    /* Loads DRC enabled state */
+    fun loadDrcEnabled(): Boolean {
+        return sharedPreferences.getBoolean(Keys.PREF_DRC, false)
+    }
+
+    /* Loads all EQ bands (10 bands for full range) */
+    fun loadEqBand(band: Int): Int {
+        return when (band) {
+            0 -> sharedPreferences.getInt(Keys.PREF_EQ_LOW, 0)
+            1 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_1, 0)
+            2 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_2, 0)
+            3 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_3, 0)
+            4 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_4, 0)
+            5 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_5, 0)
+            6 -> sharedPreferences.getInt(Keys.PREF_EQ_MID, 0)
+            7 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_6, 0)
+            8 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_7, 0)
+            9 -> sharedPreferences.getInt(Keys.PREF_EQ_HIGH, 0)
+            else -> 0
+        }
+    }
+
+    /* Loads selected preset name */
+    fun loadSelectedPreset(): String {
+        return sharedPreferences.getString(Keys.PREF_PRESET_SELECTED, "") ?: ""
+    }
+
+    /* Saves selected preset name */
+    fun saveSelectedPreset(preset: String) {
+        sharedPreferences.edit { putString(Keys.PREF_PRESET_SELECTED, preset) }
+    }
+
+    /* Loads preset EQ band values */
+    fun loadPresetEqBand(band: Int): Int {
+        return when (band) {
+            0 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_0, 0)
+            1 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_1, 0)
+            2 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_2, 0)
+            3 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_3, 0)
+            4 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_4, 0)
+            5 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_5, 0)
+            6 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_6, 0)
+            7 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_7, 0)
+            8 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_8, 0)
+            9 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_9, 0)
+            else -> 0
+        }
+    }
+
+    /* Loads selected language */
+    fun loadSelectedLanguage(): String {
+        return sharedPreferences.getString(Keys.PREF_LANGUAGE_SELECTED, "system") ?: "system"
+    }
+
+    /* Saves selected language */
+    fun saveSelectedLanguage(language: String) {
+        sharedPreferences.edit { putString(Keys.PREF_LANGUAGE_SELECTED, language) }
+    }
+
+    /* Loads preset Bass Boost */
+    fun loadPresetBassBoost(): Float {
+        return sharedPreferences.getFloat(Keys.PREF_PRESET_BASS_BOOST, 0f)
+    }
+
+    /* Loads preset Reverb */
+    fun loadPresetReverb(): Float {
+        return sharedPreferences.getFloat(Keys.PREF_PRESET_REVERB, 0f)
+    }
+
+    /* Loads preset DRC */
+    fun loadPresetDrc(): Boolean {
+        return sharedPreferences.getBoolean(Keys.PREF_PRESET_DRC, false)
+    }
+
+    /* Loads preset Stereo Width */
+    fun loadPresetStereoWidth(): Float {
+        return sharedPreferences.getFloat(Keys.PREF_PRESET_STEREO_WIDTH, 1f)
+    }
+
+    /* Resets Equalizer settings to default */
+    fun resetEqualizer() {
+        sharedPreferences.edit {
+            putInt(Keys.PREF_EQ_LOW, 0)
+            putInt(Keys.PREF_EQ_BAND_1, 0)
+            putInt(Keys.PREF_EQ_BAND_2, 0)
+            putInt(Keys.PREF_EQ_BAND_3, 0)
+            putInt(Keys.PREF_EQ_BAND_4, 0)
+            putInt(Keys.PREF_EQ_BAND_5, 0)
+            putInt(Keys.PREF_EQ_MID, 0)
+            putInt(Keys.PREF_EQ_BAND_6, 0)
+            putInt(Keys.PREF_EQ_BAND_7, 0)
+            putInt(Keys.PREF_EQ_HIGH, 0)
+        }
+    }
+
 }

app/src/main/java/com/michatec/radio/helpers/ShortcutHelper.kt

@@ -1,17 +1,3 @@
-/*
- * ShortcutHelper.kt
- * Implements the ShortcutHelper object
- * A ShortcutHelper creates and handles station shortcuts on the Home screen
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
@@ -35,7 +21,6 @@ object ShortcutHelper {
 
     /* Places shortcut on Home screen */
     fun placeShortcut(context: Context, station: Station) {
-        // credit: https://medium.com/@BladeCoder/using-support-library-26-0-0-you-can-do-bb75911e01e8
         if (ShortcutManagerCompat.isRequestPinShortcutSupported(context)) {
             val shortcut: ShortcutInfoCompat = ShortcutInfoCompat.Builder(context, station.name)
                 .setShortLabel(station.name)

app/src/main/java/com/michatec/radio/helpers/UpdateHelper.kt

@@ -1,17 +1,3 @@
-/*
- * UpdateHelper.kt
- * Implements the UpdateHelper class
- * A UpdateHelper provides methods to update a single station or the whole collection of stations
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context

app/src/main/java/com/michatec/radio/search/DirectInputCheck.kt

@@ -1,17 +1,3 @@
-/*
- * DirectInputCheck.kt
- * Implements the DirectInputCheck class
- * A DirectInputCheck checks if a station url is valid and returns station via a listener
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-23 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.search
 
 import android.content.Context

app/src/main/java/com/michatec/radio/search/RadioBrowserResult.kt

@@ -1,17 +1,3 @@
-/*
- * RadioBrowserResult.kt
- * Implements the RadioBrowserResult class
- * A RadioBrowserResult is the search result of a request to api.radio-browser.info
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.search
 
 import com.google.gson.annotations.Expose

app/src/main/java/com/michatec/radio/search/RadioBrowserSearch.kt

@@ -1,17 +1,3 @@
-/*
- * RadioBrowserSearch.kt
- * Implements the RadioBrowserSearch class
- * A RadioBrowserSearch performs searches on the radio-browser.info database
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.search
 
 import android.content.Context

app/src/main/java/com/michatec/radio/search/SearchResultAdapter.kt

@@ -1,17 +1,3 @@
-/*
- * SearchResultAdapter.kt
- * Implements the SearchResultAdapter class
- * A SearchResultAdapter is a custom adapter providing search result views for a RecyclerView
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.search
 
 import android.content.Context
@@ -22,15 +8,21 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.Toast
+import androidx.annotation.OptIn
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.DefaultLifecycleObserver
 import androidx.lifecycle.LifecycleOwner
-import androidx.media3.common.MediaItem
+import androidx.media3.common.*
+import androidx.media3.common.util.UnstableApi
+import androidx.media3.exoplayer.DefaultRenderersFactory
 import androidx.media3.exoplayer.ExoPlayer
+import androidx.media3.exoplayer.audio.AudioSink
+import androidx.media3.exoplayer.audio.DefaultAudioSink
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.textview.MaterialTextView
 import com.michatec.radio.R
 import com.michatec.radio.core.Station
+import com.michatec.radio.helpers.NativeAudioProcessor
 
 
 /*
@@ -45,6 +37,7 @@ class SearchResultAdapter(
     private var exoPlayer: ExoPlayer? = null
     private var paused: Boolean = false
     private var isItemSelected: Boolean = false
+    private var nativeAudioProcessor = NativeAudioProcessor()
 
     /* Listener Interface */
     interface SearchResultAdapterListener {
@@ -152,6 +145,7 @@ class SearchResultAdapter(
     }
 
 
+    @OptIn(UnstableApi::class)
     private fun performPrePlayback(context: Context, streamUri: String) {
         if (streamUri.contains(".m3u8")) {
             // release previous player if it exists
@@ -165,8 +159,30 @@ class SearchResultAdapter(
             // release previous player if it exists
             stopPrePlayback()
 
-            // create a new instance of ExoPlayer
-            exoPlayer = ExoPlayer.Builder(context).build()
+            // set up audio attributes for the preview player
+            val audioAttributes = androidx.media3.common.AudioAttributes.Builder()
+                .setContentType(C.AUDIO_CONTENT_TYPE_MUSIC)
+                .setUsage(C.USAGE_MEDIA)
+                .build()
+
+            // Create a RenderersFactory that injects the NativeAudioProcessor
+            val renderersFactory = object : DefaultRenderersFactory(context) {
+                override fun buildAudioSink(
+                    context: Context,
+                    enableFloatOutput: Boolean,
+                    enableAudioTrackPlaybackParams: Boolean
+                ): AudioSink {
+                    return DefaultAudioSink.Builder(context)
+                        .setAudioProcessors(arrayOf(nativeAudioProcessor))
+                        .build()
+                }
+            }
+
+            // create a new instance of ExoPlayer with focus handling
+            exoPlayer = ExoPlayer.Builder(context, renderersFactory)
+                .setAudioAttributes(audioAttributes, true)
+                .setHandleAudioBecomingNoisy(true)
+                .build()
 
             // create a MediaItem with the streamUri
             val mediaItem = MediaItem.fromUri(streamUri)
@@ -213,7 +229,7 @@ class SearchResultAdapter(
             .setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
             .build()
 
-        val focusRequest = AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN_TRANSIENT)
+        val focusRequest = AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN)
             .setAudioAttributes(audioAttributes)
             .build()
 

app/src/main/java/com/michatec/radio/ui/LayoutHolder.kt

@@ -1,26 +1,12 @@
-/*
- * LayoutHolder.kt
- * Implements the LayoutHolder class
- * A LayoutHolder hold references to the main views
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.ui
 
-import android.annotation.SuppressLint
 import android.content.ClipData
 import android.content.ClipboardManager
 import android.content.Context
 import android.content.Intent
+import android.content.pm.PackageManager
 import android.graphics.drawable.AnimatedVectorDrawable
-import android.os.Build
+import java.util.Locale
 import android.view.View
 import android.view.animation.Animation
 import android.view.animation.AnimationUtils
@@ -32,9 +18,11 @@ import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.constraintlayout.widget.Group
 import androidx.core.view.isGone
 import androidx.core.view.isVisible
+import androidx.mediarouter.app.MediaRouteButton
 import androidx.recyclerview.widget.DefaultItemAnimator
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import com.google.android.gms.cast.framework.CastButtonFactory
 import com.google.android.material.bottomsheet.BottomSheetBehavior
 import com.google.android.material.snackbar.Snackbar
 import com.michatec.radio.Keys
@@ -54,30 +42,33 @@ data class LayoutHolder(var rootView: View) {
     /* Main class variables */
     var recyclerView: RecyclerView = rootView.findViewById(R.id.station_list)
     val layoutManager: LinearLayoutManager
-    private var bottomSheet: ConstraintLayout = rootView.findViewById(R.id.bottom_sheet)
+    private var bottomSheet: ConstraintLayout? = rootView.findViewById(R.id.bottom_sheet)
 
     //private var sheetMetadataViews: Group
-    private var sleepTimerRunningViews: Group = rootView.findViewById(R.id.sleep_timer_running_views)
-    private var downloadProgressIndicator: ProgressBar = rootView.findViewById(R.id.download_progress_indicator)
-    private var stationImageView: ImageView = rootView.findViewById(R.id.station_icon)
-    private var stationNameView: TextView = rootView.findViewById(R.id.player_station_name)
-    private var metadataView: TextView = rootView.findViewById(R.id.player_station_metadata)
+    private var sleepTimerRunningViews: Group? = rootView.findViewById(R.id.sleep_timer_running_views)
+    private var downloadProgressIndicator: ProgressBar? = rootView.findViewById(R.id.download_progress_indicator)
+    private var stationImageView: ImageView? = rootView.findViewById(R.id.station_icon)
+    private var stationNameView: TextView? = rootView.findViewById(R.id.player_station_name)
+    private var metadataView: TextView? = rootView.findViewById(R.id.player_station_metadata)
     var playButtonView: ImageButton = rootView.findViewById(R.id.player_play_button)
+    var playerPrevButtonView: ImageButton? = rootView.findViewById(R.id.player_prev_button)
+    var playerNextButtonView: ImageButton? = rootView.findViewById(R.id.player_next_button)
     private var bufferingIndicator: ProgressBar = rootView.findViewById(R.id.player_buffering_indicator)
-    private var sheetStreamingLinkHeadline: TextView = rootView.findViewById(R.id.sheet_streaming_link_headline)
-    private var sheetStreamingLinkView: TextView = rootView.findViewById(R.id.sheet_streaming_link)
-    private var sheetMetadataHistoryHeadline: TextView = rootView.findViewById(R.id.sheet_metadata_headline)
-    private var sheetMetadataHistoryView: TextView = rootView.findViewById(R.id.sheet_metadata_history)
-    private var sheetNextMetadataView: ImageButton = rootView.findViewById(R.id.sheet_next_metadata_button)
-    private var sheetPreviousMetadataView: ImageButton = rootView.findViewById(R.id.sheet_previous_metadata_button)
-    private var sheetCopyMetadataButtonView: ImageButton = rootView.findViewById(R.id.copy_station_metadata_button)
-    private var sheetShareLinkButtonView: ImageView = rootView.findViewById(R.id.sheet_share_link_button)
-    private var sheetBitrateView: TextView = rootView.findViewById(R.id.sheet_bitrate_view)
-    var sheetSleepTimerStartButtonView: ImageButton = rootView.findViewById(R.id.sleep_timer_start_button)
-    var sheetSleepTimerCancelButtonView: ImageButton = rootView.findViewById(R.id.sleep_timer_cancel_button)
+    private var sheetStreamingLinkHeadline: TextView? = rootView.findViewById(R.id.sheet_streaming_link_headline)
+    private var sheetStreamingLinkView: TextView? = rootView.findViewById(R.id.sheet_streaming_link)
+    private var sheetMetadataHistoryHeadline: TextView? = rootView.findViewById(R.id.sheet_metadata_headline)
+    private var sheetMetadataHistoryView: TextView? = rootView.findViewById(R.id.sheet_metadata_history)
+    private var sheetNextMetadataView: ImageButton? = rootView.findViewById(R.id.sheet_next_metadata_button)
+    private var sheetPreviousMetadataView: ImageButton? = rootView.findViewById(R.id.sheet_previous_metadata_button)
+    private var sheetCopyMetadataButtonView: ImageButton? = rootView.findViewById(R.id.copy_station_metadata_button)
+    private var mediaRouteButton: MediaRouteButton? = rootView.findViewById(R.id.media_route_button)
+    private var sheetShareLinkButtonView: ImageView? = rootView.findViewById(R.id.sheet_share_link_button)
+    private var sheetBitrateView: TextView? = rootView.findViewById(R.id.sheet_bitrate_view)
+    var sheetSleepTimerStartButtonView: ImageButton? = rootView.findViewById(R.id.sleep_timer_start_button)
+    var sheetSleepTimerCancelButtonView: ImageButton? = rootView.findViewById(R.id.sleep_timer_cancel_button)
     private var sheetSleepTimerRemainingTimeView: TextView = rootView.findViewById(R.id.sleep_timer_remaining_time)
     private var onboardingLayout: ConstraintLayout = rootView.findViewById(R.id.onboarding_layout)
-    private var bottomSheetBehavior: BottomSheetBehavior<ConstraintLayout> = BottomSheetBehavior.from(bottomSheet)
+    private var bottomSheetBehavior: BottomSheetBehavior<ConstraintLayout>? = bottomSheet?.let { BottomSheetBehavior.from(it) }
     private var metadataHistory: MutableList<String>
     private var metadataHistoryPosition: Int
     private var isBuffering: Boolean
@@ -97,69 +88,70 @@ data class LayoutHolder(var rootView: View) {
         recyclerView.itemAnimator = DefaultItemAnimator()
 
         // set up metadata history next and previous buttons
-        sheetPreviousMetadataView.setOnClickListener {
+        sheetPreviousMetadataView?.setOnClickListener {
             if (metadataHistory.isNotEmpty()) {
                 if (metadataHistoryPosition > 0) {
                     metadataHistoryPosition -= 1
                 } else {
                     metadataHistoryPosition = metadataHistory.size - 1
                 }
-                sheetMetadataHistoryView.text = metadataHistory[metadataHistoryPosition]
+                sheetMetadataHistoryView?.text = metadataHistory[metadataHistoryPosition]
             }
         }
-        sheetNextMetadataView.setOnClickListener {
+        sheetNextMetadataView?.setOnClickListener {
             if (metadataHistory.isNotEmpty()) {
                 if (metadataHistoryPosition < metadataHistory.size - 1) {
                     metadataHistoryPosition += 1
                 } else {
                     metadataHistoryPosition = 0
                 }
-                sheetMetadataHistoryView.text = metadataHistory[metadataHistoryPosition]
+                sheetMetadataHistoryView?.text = metadataHistory[metadataHistoryPosition]
             }
         }
-        sheetMetadataHistoryView.setOnLongClickListener {
+        sheetMetadataHistoryView?.setOnLongClickListener {
             copyMetadataHistoryToClipboard()
             return@setOnLongClickListener true
         }
-        sheetMetadataHistoryHeadline.setOnLongClickListener {
+        sheetMetadataHistoryHeadline?.setOnLongClickListener {
             copyMetadataHistoryToClipboard()
             return@setOnLongClickListener true
         }
 
+        // Set up MediaRouteButton (Google Cast)
+        mediaRouteButton?.let {
+            CastButtonFactory.setUpMediaRouteButton(rootView.context, it)
+        }
+
         // set layout for player
         setupBottomSheet()
     }
 
 
     /* Updates the player views */
-    @SuppressLint("DefaultLocale")
     fun updatePlayerViews(context: Context, station: Station, isPlaying: Boolean) {
-
-        // set default metadata views, when playback has stopped
         if (!isPlaying) {
-            metadataView.text = station.name
-            sheetMetadataHistoryView.text = station.name
-//            sheetMetadataHistoryView.isSelected = true
+            metadataView?.text = station.name
+            sheetMetadataHistoryView?.text = station.name
         }
 
         // update name
-        stationNameView.text = station.name
+        stationNameView?.text = station.name
 
         // toggle text scrolling (marquee) if necessary
-        stationNameView.isSelected = isPlaying
+        stationNameView?.isSelected = isPlaying
 
         // reduce the shadow left and right because of scrolling (Marquee)
-        stationNameView.setFadingEdgeLength(8)
+        stationNameView?.setFadingEdgeLength(8)
 
         // update cover
         if (station.imageColor != -1) {
-            stationImageView.setBackgroundColor(station.imageColor)
+            stationImageView?.setBackgroundColor(station.imageColor)
         }
-        stationImageView.setImageBitmap(ImageHelper.getStationImage(context, station.smallImage))
-        stationImageView.contentDescription = "${context.getString(R.string.descr_player_station_image)}: ${station.name}"
+        stationImageView?.setImageBitmap(ImageHelper.getStationImage(context, station.smallImage))
+        stationImageView?.contentDescription = "${context.getString(R.string.descr_player_station_image)}: ${station.name}"
 
         // update streaming link
-        sheetStreamingLinkView.text = station.getStreamUri()
+        sheetStreamingLinkView?.text = station.getStreamUri()
 
         val bitrateText: CharSequence = if (station.codec.isNotEmpty()) {
             if (station.bitrate == 0) {
@@ -168,9 +160,9 @@ data class LayoutHolder(var rootView: View) {
             } else {
                 val kiloBytesPerSecond = station.bitrate / 8F
                 val dataRateString = if (kiloBytesPerSecond >= 1000) {
-                    String.format("%.2f mb/s", kiloBytesPerSecond / 1000F)
+                    String.format(Locale.ROOT, "%.2f mb/s", kiloBytesPerSecond / 1000F)
                 } else {
-                    String.format("%.0f kb/s", kiloBytesPerSecond)
+                    String.format(Locale.ROOT, "%.0f kb/s", kiloBytesPerSecond)
                 }
                 // show the bitrate and codec if the result is available in the radio-browser.info API
                 buildString {
@@ -188,50 +180,56 @@ data class LayoutHolder(var rootView: View) {
         }
 
         // update bitrate
-        sheetBitrateView.text = bitrateText
+        sheetBitrateView?.text = bitrateText
 
         // update click listeners
-        sheetStreamingLinkHeadline.setOnClickListener {
+        sheetStreamingLinkHeadline?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetStreamingLinkView.text
+                sheetStreamingLinkView?.text ?: ""
             )
+            Snackbar.make(rootView, R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
         }
-        sheetStreamingLinkView.setOnClickListener {
+        sheetStreamingLinkView?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetStreamingLinkView.text
+                sheetStreamingLinkView?.text ?: ""
             )
+            Snackbar.make(rootView, R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
         }
-        sheetMetadataHistoryHeadline.setOnClickListener {
+        sheetMetadataHistoryHeadline?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetMetadataHistoryView.text
+                sheetMetadataHistoryView?.text ?: ""
             )
+            Snackbar.make(rootView, R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
         }
-        sheetMetadataHistoryView.setOnClickListener {
+        sheetMetadataHistoryView?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetMetadataHistoryView.text
+                sheetMetadataHistoryView?.text ?: ""
             )
+            Snackbar.make(rootView, R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
         }
-        sheetCopyMetadataButtonView.setOnClickListener {
+        sheetCopyMetadataButtonView?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetMetadataHistoryView.text
+                sheetMetadataHistoryView?.text ?: ""
             )
+            Snackbar.make(rootView, R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
         }
-        sheetBitrateView.setOnClickListener {
+        sheetBitrateView?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetBitrateView.text
+                sheetBitrateView?.text ?: ""
             )
+            Snackbar.make(rootView, R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
         }
-        sheetShareLinkButtonView.setOnClickListener {
+        sheetShareLinkButtonView?.setOnClickListener {
             val share = Intent.createChooser(Intent().apply {
                 action = Intent.ACTION_SEND
-                putExtra(Intent.EXTRA_TITLE, stationNameView.text)
-                putExtra(Intent.EXTRA_TEXT, sheetStreamingLinkView.text)
+                putExtra(Intent.EXTRA_TITLE, stationNameView?.text)
+                putExtra(Intent.EXTRA_TEXT, sheetStreamingLinkView?.text ?: "")
                 type = "text/plain"
             }, null)
             context.startActivity(share)
@@ -244,10 +242,7 @@ data class LayoutHolder(var rootView: View) {
         val clip: ClipData = ClipData.newPlainText("simple text", clipString)
         val cm: ClipboardManager = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
         cm.setPrimaryClip(clip)
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
-            // since API 33 (TIRAMISU) the OS displays its own notification when content is copied to the clipboard
-            Snackbar.make(rootView, R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
-        }
+        Snackbar.make(rootView, R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
     }
 
 
@@ -257,6 +252,7 @@ data class LayoutHolder(var rootView: View) {
         val stringBuilder: StringBuilder = StringBuilder()
         metadataHistory.forEach { stringBuilder.append("${it.trim()}\n") }
         copyToClipboard(rootView.context, stringBuilder.toString())
+        Snackbar.make(rootView, R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
     }
 
 
@@ -264,11 +260,11 @@ data class LayoutHolder(var rootView: View) {
     fun updateMetadata(metadataHistoryList: MutableList<String>?) {
         if (!metadataHistoryList.isNullOrEmpty()) {
             metadataHistory = metadataHistoryList
-            if (metadataHistory.last() != metadataView.text) {
+            if (metadataHistory.last() != metadataView?.text) {
                 metadataHistoryPosition = metadataHistory.size - 1
                 val metadataString = metadataHistory[metadataHistoryPosition]
-                metadataView.text = metadataString
-                sheetMetadataHistoryView.text = metadataString
+                metadataView?.text = metadataString
+                sheetMetadataHistoryView?.text = metadataString
             }
         }
     }
@@ -278,14 +274,16 @@ data class LayoutHolder(var rootView: View) {
     fun updateSleepTimer(context: Context, timeRemaining: Long = 0L) {
         when (timeRemaining) {
             0L -> {
-                sleepTimerRunningViews.isGone = true
+                sleepTimerRunningViews?.isGone = true
+                sheetSleepTimerRemainingTimeView.isVisible = false
             }
             else -> {
-                sleepTimerRunningViews.isVisible = true
+                sleepTimerRunningViews?.isVisible = true
+                sheetSleepTimerRemainingTimeView.isVisible = true
                 val sleepTimerTimeRemaining = DateTimeHelper.convertToHoursMinutesSeconds(timeRemaining)
                 sheetSleepTimerRemainingTimeView.text = sleepTimerTimeRemaining
                 sheetSleepTimerRemainingTimeView.contentDescription = "${context.getString(R.string.descr_expanded_player_sleep_timer_remaining_time)}: $sleepTimerTimeRemaining"
-                stationNameView.isSelected = false
+                stationNameView?.isSelected = false
             }
         }
     }
@@ -297,12 +295,10 @@ data class LayoutHolder(var rootView: View) {
             playButtonView.setImageResource(R.drawable.ic_audio_waves_animated)
             val animatedVectorDrawable = playButtonView.drawable as? AnimatedVectorDrawable
             animatedVectorDrawable?.start()
-            sheetSleepTimerStartButtonView.isVisible = true
-            // bufferingIndicator.isVisible = false
+            sheetSleepTimerStartButtonView?.isVisible = true
         } else {
             playButtonView.setImageResource(R.drawable.ic_player_play_symbol_42dp)
-            sheetSleepTimerStartButtonView.isVisible = false
-            // bufferingIndicator.isVisible = isBuffering
+            sheetSleepTimerStartButtonView?.isVisible = false
         }
     }
 
@@ -316,8 +312,8 @@ data class LayoutHolder(var rootView: View) {
     /* Toggles visibility of the download progress indicator */
     fun toggleDownloadProgressIndicator() {
         when (PreferencesHelper.loadActiveDownloads()) {
-            Keys.ACTIVE_DOWNLOADS_EMPTY -> downloadProgressIndicator.isGone = true
-            else -> downloadProgressIndicator.isVisible = true
+            Keys.ACTIVE_DOWNLOADS_EMPTY -> downloadProgressIndicator?.isGone = true
+            else -> downloadProgressIndicator?.isVisible = true
         }
     }
 
@@ -338,27 +334,27 @@ data class LayoutHolder(var rootView: View) {
 
     /* Initiates the rotation animation of the play button  */
     fun animatePlaybackButtonStateTransition(context: Context, isPlaying: Boolean) {
-        when (isPlaying) {
-            true -> {
-                val rotateClockwise = AnimationUtils.loadAnimation(context, R.anim.rotate_clockwise_slow)
-                rotateClockwise.setAnimationListener(createAnimationListener(true))
-                playButtonView.startAnimation(rotateClockwise)
-            }
-            false -> {
-                val rotateCounterClockwise = AnimationUtils.loadAnimation(context, R.anim.rotate_counterclockwise_fast)
-                rotateCounterClockwise.setAnimationListener(createAnimationListener(false))
-                playButtonView.startAnimation(rotateCounterClockwise)
-            }
-
+        if (context.packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)) {
+            // TV: Toggle play button immediately for snappier feel
+            togglePlayButton(isPlaying)
+        } else {
+            // Handy/Tablet: Rotate the play button
+            val rotateAnimation = AnimationUtils.loadAnimation(context, if (isPlaying) R.anim.rotate_clockwise_slow else R.anim.rotate_counterclockwise_fast)
+            rotateAnimation.setAnimationListener(createAnimationListener(isPlaying))
+            playButtonView.startAnimation(rotateAnimation)
         }
     }
 
 
     /* Shows player */
     fun showPlayer(context: Context): Boolean {
-        UiHelper.setViewMargins(context, recyclerView, 0, 0, 0, Keys.BOTTOM_SHEET_PEEK_HEIGHT)
-        if (bottomSheetBehavior.state == BottomSheetBehavior.STATE_HIDDEN && onboardingLayout.isGone) {
-            bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
+        if (bottomSheetBehavior != null) {
+            UiHelper.setViewMargins(context, recyclerView, 0, 0, 0, Keys.BOTTOM_SHEET_PEEK_HEIGHT)
+            if (bottomSheetBehavior?.state == BottomSheetBehavior.STATE_HIDDEN && onboardingLayout.isGone) {
+                bottomSheetBehavior?.state = BottomSheetBehavior.STATE_COLLAPSED
+            }
+        } else {
+            UiHelper.setViewMargins(context, recyclerView, 0, 0, 0, 0)
         }
         return true
     }
@@ -367,15 +363,15 @@ data class LayoutHolder(var rootView: View) {
     /* Hides player */
     private fun hidePlayer(context: Context): Boolean {
         UiHelper.setViewMargins(context, recyclerView, 0, 0, 0, 0)
-        bottomSheetBehavior.state = BottomSheetBehavior.STATE_HIDDEN
+        bottomSheetBehavior?.state = BottomSheetBehavior.STATE_HIDDEN
         return true
     }
 
 
     /* Minimizes player sheet if expanded */
     fun minimizePlayerIfExpanded(): Boolean {
-        return if (bottomSheetBehavior.state == BottomSheetBehavior.STATE_EXPANDED) {
-            bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
+        return if (bottomSheetBehavior?.state == BottomSheetBehavior.STATE_EXPANDED) {
+            bottomSheetBehavior?.state = BottomSheetBehavior.STATE_COLLAPSED
             true
         } else {
             false
@@ -388,7 +384,7 @@ data class LayoutHolder(var rootView: View) {
         return object : Animation.AnimationListener {
             override fun onAnimationStart(animation: Animation) {}
             override fun onAnimationEnd(animation: Animation) {
-                // set up button symbol and playback indicator afterwards
+                // set up button symbol and playback indicator afterward
                 togglePlayButton(isPlaying)
             }
 
@@ -399,38 +395,40 @@ data class LayoutHolder(var rootView: View) {
 
     /* Sets up the player (BottomSheet) */
     private fun setupBottomSheet() {
-        // show / hide the small player
-        bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
-        bottomSheetBehavior.addBottomSheetCallback(object :
-            BottomSheetBehavior.BottomSheetCallback() {
-            override fun onSlide(view: View, slideOffset: Float) {
-            }
-
-            override fun onStateChanged(view: View, state: Int) {
-                when (state) {
-                    BottomSheetBehavior.STATE_COLLAPSED -> Unit // do nothing
-                    BottomSheetBehavior.STATE_DRAGGING -> Unit // do nothing
-                    BottomSheetBehavior.STATE_EXPANDED -> Unit // do nothing
-                    BottomSheetBehavior.STATE_HALF_EXPANDED -> Unit // do nothing
-                    BottomSheetBehavior.STATE_SETTLING -> Unit // do nothing
-                    BottomSheetBehavior.STATE_HIDDEN -> showPlayer(rootView.context)
+        if (bottomSheetBehavior != null) {
+            // show / hide the small player
+            bottomSheetBehavior?.state = BottomSheetBehavior.STATE_COLLAPSED
+            bottomSheetBehavior?.addBottomSheetCallback(object :
+                BottomSheetBehavior.BottomSheetCallback() {
+                override fun onSlide(view: View, slideOffset: Float) {
                 }
-            }
-        })
-        // toggle collapsed state on tap
-        bottomSheet.setOnClickListener { toggleBottomSheetState() }
-        stationImageView.setOnClickListener { toggleBottomSheetState() }
-        stationNameView.setOnClickListener { toggleBottomSheetState() }
-        metadataView.setOnClickListener { toggleBottomSheetState() }
+
+                override fun onStateChanged(view: View, state: Int) {
+                    when (state) {
+                        BottomSheetBehavior.STATE_COLLAPSED -> Unit // do nothing
+                        BottomSheetBehavior.STATE_DRAGGING -> Unit // do nothing
+                        BottomSheetBehavior.STATE_EXPANDED -> Unit // do nothing
+                        BottomSheetBehavior.STATE_HALF_EXPANDED -> Unit // do nothing
+                        BottomSheetBehavior.STATE_SETTLING -> Unit // do nothing
+                        BottomSheetBehavior.STATE_HIDDEN -> showPlayer(rootView.context)
+                    }
+                }
+            })
+            // toggle collapsed state on tap
+            bottomSheet?.setOnClickListener { toggleBottomSheetState() }
+            stationImageView?.setOnClickListener { toggleBottomSheetState() }
+            stationNameView?.setOnClickListener { toggleBottomSheetState() }
+            metadataView?.setOnClickListener { toggleBottomSheetState() }
+        }
     }
 
 
     /* Toggle expanded/collapsed state of bottom sheet */
     private fun toggleBottomSheetState() {
-        when (bottomSheetBehavior.state) {
-            BottomSheetBehavior.STATE_COLLAPSED -> bottomSheetBehavior.state =
+        when (bottomSheetBehavior?.state) {
+            BottomSheetBehavior.STATE_COLLAPSED -> bottomSheetBehavior?.state =
                 BottomSheetBehavior.STATE_EXPANDED
-            else -> bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
+            else -> bottomSheetBehavior?.state = BottomSheetBehavior.STATE_COLLAPSED
         }
     }
 

app/src/main/java/com/michatec/radio/ui/PlayerState.kt

@@ -1,17 +1,3 @@
-/*
- * PlayerState.kt
- * Implements the PlayerState class
- * A PlayerState holds parameters describing the state of the player part of the UI
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.ui
 
 import android.os.Parcelable

app/src/main/res/color/selector_card_station_stroke.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- Focused (TV remote) states -->
+    <item android:color="@color/list_card_stroke_focused" android:state_focused="true" />
+    <!-- Default state -->
+    <item android:color="@color/list_card_stroke_background" />
+</selector>

app/src/main/res/drawable/ic_equalizer_24dp.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:viewportHeight="960"
+    android:viewportWidth="960"
+    android:width="24dp">
+    <path
+        android:fillColor="@color/icon_default"
+        android:pathData="M200,840Q167,840 143.5,816.5Q120,793 120,760L120,200Q120,167 143.5,143.5Q167,120 200,120L760,120Q793,120 816.5,143.5Q840,167 840,200L840,760Q840,793 816.5,816.5Q793,840 760,840L200,840ZM240,503L400,343L560,503L720,343L760,383L760,200Q760,200 760,200Q760,200 760,200L200,200Q200,200 200,200Q200,200 200,200L200,463L240,503ZM200,760L760,760Q760,760 760,760Q760,760 760,760L760,496L720,456L560,616L400,456L240,616L200,576L200,760Q200,760 200,760Q200,760 200,760ZM200,760L200,760Q200,760 200,760Q200,760 200,760L200,496L200,576L200,463L200,383L200,200Q200,200 200,200Q200,200 200,200L200,200Q200,200 200,200Q200,200 200,200L200,463L200,463L200,576L200,576L200,760Q200,760 200,760Q200,760 200,760Z"/>
+</vector>

app/src/main/res/drawable/ic_language_24dp.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="@color/icon_default"
+        android:pathData="M280,680L560,680L560,600L280,600L280,680ZM280,520L680,520L680,440L280,440L280,520ZM280,360L680,360L680,280L280,280L280,360ZM200,840Q167,840 143.5,816.5Q120,793 120,760L120,200Q120,167 143.5,143.5Q167,120 200,120L760,120Q793,120 816.5,143.5Q840,167 840,200L840,760Q840,793 816.5,816.5Q793,840 760,840L200,840ZM200,760L760,760Q760,760 760,760Q760,760 760,760L760,200Q760,200 760,200Q760,200 760,200L200,200Q200,200 200,200Q200,200 200,200L200,760Q200,760 200,760Q200,760 200,760ZM200,200L200,200Q200,200 200,200Q200,200 200,200L200,760Q200,760 200,760Q200,760 200,760L200,760Q200,760 200,760Q200,760 200,760L200,200Q200,200 200,200Q200,200 200,200Z" />
+</vector>

app/src/main/res/drawable/ic_presets_24dp.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:viewportHeight="960"
+    android:viewportWidth="960"
+    android:width="24dp">
+    <path
+        android:fillColor="@color/icon_default"
+        android:pathData="M200,840Q167,840 143.5,816.5Q120,793 120,760L120,200Q120,167 143.5,143.5Q167,120 200,120L760,120Q793,120 816.5,143.5Q840,167 840,200L840,760Q840,793 816.5,816.5Q793,840 760,840L200,840ZM200,333L760,333L760,200Q760,200 760,200Q760,200 760,200L200,200Q200,200 200,200Q200,200 200,200L200,333ZM200,547L760,547L760,413L200,413L200,547ZM200,760L760,760Q760,760 760,760Q760,760 760,760L760,627L200,627L200,760Q200,760 200,760Q200,760 200,760ZM240,306L240,226L320,226L320,306L240,306ZM240,520L240,440L320,440L320,520L240,520ZM240,734L240,654L320,654L320,734L240,734Z"/>
+</vector>

app/src/main/res/drawable/ic_visualizer_24dp.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:viewportHeight="960"
+    android:viewportWidth="960"
+    android:width="24dp">
+    <path
+        android:fillColor="@color/icon_default"
+        android:pathData="M640,800L640,520L800,520L800,800L640,800ZM400,800L400,160L560,160L560,800L400,800ZM160,800L160,360L320,360L320,800L160,800Z"/>
+</vector>

app/src/main/res/drawable/selector_card_station_background.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@color/search_result_background_selected" android:state_focused="true" />
+    <item android:drawable="@android:color/transparent" />
+</selector>

app/src/main/res/drawable/selector_card_station_stroke.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="@color/list_card_stroke_focused" android:state_focused="true" />
+    <item android:color="@color/list_card_stroke_background" />
+</selector>

app/src/main/res/drawable/selector_generic_button_focus.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_focused="true">
+        <shape android:shape="rectangle">
+            <solid android:color="#80FFFFFF" />
+            <corners android:radius="8dp" />
+            <stroke android:width="3dp" android:color="@color/default_neutral_white" />
+        </shape>
+    </item>
+    <item android:drawable="@android:color/transparent" />
+</selector>

app/src/main/res/drawable/selector_search_result_item.xml

@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <!-- View is "selected" -->
+    <!-- View is "selected" or "focused" (for TV) -->
     <item android:drawable="@drawable/shape_search_result_item_selected" android:state_selected="true" />
+    <item android:drawable="@drawable/shape_search_result_item_selected" android:state_focused="true" />
 
     <!-- Default state. -->
     <item android:drawable="@drawable/shape_search_result_item" />

app/src/main/res/drawable/shape_player_button_small_selected.xml

@@ -1,8 +1,8 @@
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
     android:shape="oval">
     <stroke
-        android:width="2dp"
-        android:color="@color/default_neutral_lighter" />
+        android:width="4dp"
+        android:color="@color/default_neutral_white" />
     <size
         android:width="56dp"
         android:height="56dp" />

app/src/main/res/drawable/splash_screen.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@color/splashBackgroundColor" />
+    <item
+        android:width="160dp"
+        android:height="160dp"
+        android:gravity="center"
+        android:drawable="@mipmap/ic_launcher" />
+</layer-list>

app/src/main/res/layout-television/bottom_sheet_playback_controls.xml

@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/bottom_sheet"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="@drawable/shape_player_sheet_background"
+    android:padding="24dp">
+
+    <com.google.android.material.imageview.ShapeableImageView
+        android:id="@+id/station_icon"
+        android:layout_width="120dp"
+        android:layout_height="120dp"
+        android:background="@drawable/shape_cover_small"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:shapeAppearanceOverlay="@style/RoundedCorners"
+        app:srcCompat="@drawable/ic_default_station_image_72dp" />
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/player_station_name"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="24dp"
+        android:textAppearance="@style/TextAppearance.Material3.HeadlineMedium"
+        android:textColor="@color/player_sheet_text_main"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toStartOf="@+id/player_play_button"
+        app:layout_constraintStart_toEndOf="@+id/station_icon"
+        app:layout_constraintTop_toTopOf="@+id/station_icon"
+        tools:text="Station Name" />
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/player_station_metadata"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:textAppearance="@style/TextAppearance.Material3.BodyLarge"
+        android:textColor="@color/player_sheet_text_main"
+        app:layout_constraintEnd_toEndOf="@+id/player_station_name"
+        app:layout_constraintStart_toStartOf="@+id/player_station_name"
+        app:layout_constraintTop_toBottomOf="@+id/player_station_name"
+        tools:text="Metadata Info" />
+
+    <ImageButton
+        android:id="@+id/player_play_button"
+        android:layout_width="80dp"
+        android:layout_height="80dp"
+        android:background="@drawable/selector_play_button"
+        android:focusable="true"
+        android:scaleType="center"
+        app:layout_constraintBottom_toBottomOf="@+id/station_icon"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/station_icon"
+        app:srcCompat="@drawable/ic_player_play_symbol_42dp" />
+
+    <LinearLayout
+        android:id="@+id/detailed_controls_row"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="32dp"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        app:layout_constraintTop_toBottomOf="@+id/station_icon">
+
+        <ImageButton
+            android:id="@+id/sheet_previous_metadata_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:background="@drawable/selector_generic_button_focus"
+            android:focusable="true"
+            app:srcCompat="@drawable/ic_chevron_left_24dp" />
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/sheet_metadata_history"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_marginHorizontal="16dp"
+            android:ellipsize="marquee"
+            android:marqueeRepeatLimit="marquee_forever"
+            android:singleLine="true"
+            android:textAlignment="center"
+            android:textAppearance="@style/TextAppearance.Material3.BodyMedium"
+            android:textColor="@color/player_sheet_text_main"
+            tools:text="Metadata History" />
+
+        <ImageButton
+            android:id="@+id/sheet_next_metadata_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:background="@drawable/selector_generic_button_focus"
+            android:focusable="true"
+            app:srcCompat="@drawable/ic_chevron_right_24dp" />
+
+        <ImageButton
+            android:id="@+id/copy_station_metadata_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:layout_marginStart="16dp"
+            android:background="@drawable/selector_generic_button_focus"
+            android:focusable="true"
+            app:srcCompat="@drawable/ic_copy_content_24dp" />
+
+        <ImageButton
+            android:id="@+id/sleep_timer_start_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:layout_marginStart="16dp"
+            android:background="@drawable/selector_generic_button_focus"
+            android:focusable="true"
+            app:srcCompat="@drawable/ic_sleep_timer_24dp" />
+
+        <ImageButton
+            android:id="@+id/sleep_timer_cancel_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:layout_marginStart="8dp"
+            android:background="@drawable/selector_generic_button_focus"
+            android:focusable="true"
+            android:visibility="gone"
+            app:srcCompat="@drawable/ic_clear_24dp" />
+
+    </LinearLayout>
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/sleep_timer_remaining_time"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:textAppearance="@style/TextAppearance.Material3.LabelLarge"
+        android:textColor="@color/player_sheet_text_main"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/detailed_controls_row"
+        tools:text="15:00" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout-television/dialog_add_station.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="16dp">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/station_list"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:clipToPadding="false"
+        android:paddingBottom="16dp"
+        android:nextFocusRight="@id/dialog_negative_button"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/guideline"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.constraintlayout.widget.Guideline
+        android:id="@+id/guideline"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        app:layout_constraintGuide_percent="0.7" />
+
+    <LinearLayout
+        android:id="@+id/dialog_button_container"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/guideline"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <Button
+            android:id="@+id/dialog_positive_button"
+            style="@style/Widget.Material3.Button"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:nextFocusLeft="@id/station_list"
+            android:text="@string/dialog_find_station_button_add" />
+
+        <Button
+            android:id="@+id/dialog_negative_button"
+            style="@style/Widget.Material3.Button.TextButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:nextFocusLeft="@id/station_list"
+            android:text="@string/dialog_generic_button_cancel" />
+
+    </LinearLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout-television/dialog_find_station.xml

@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="16dp">
+
+    <androidx.appcompat.widget.SearchView
+        android:id="@+id/station_search_box_view"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:focusable="true"
+        android:focusableInTouchMode="true"
+        android:clickable="true"
+        android:nextFocusRight="@id/dialog_negative_button"
+        android:nextFocusDown="@id/station_search_result_list"
+        app:iconifiedByDefault="false"
+        app:layout_constraintEnd_toStartOf="@+id/guideline"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:queryHint="@string/dialog_find_station_hint" />
+
+    <ProgressBar
+        android:id="@+id/search_request_progress_indicator"
+        style="?android:attr/progressBarStyleHorizontal"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:indeterminate="true"
+        android:visibility="gone"
+        app:layout_constraintEnd_toEndOf="@+id/station_search_box_view"
+        app:layout_constraintStart_toStartOf="@+id/station_search_box_view"
+        app:layout_constraintTop_toBottomOf="@+id/station_search_box_view" />
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/no_results_text_view"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/dialog_find_station_no_results"
+        android:textAppearance="@style/TextAppearance.Material3.BodyLarge"
+        android:visibility="gone"
+        app:layout_constraintEnd_toStartOf="@+id/guideline"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/search_request_progress_indicator" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/station_search_result_list"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_marginTop="8dp"
+        android:clipToPadding="false"
+        android:paddingBottom="16dp"
+        android:nextFocusRight="@id/dialog_negative_button"
+        android:nextFocusUp="@id/station_search_box_view"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/guideline"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/no_results_text_view" />
+
+    <androidx.constraintlayout.widget.Guideline
+        android:id="@+id/guideline"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        app:layout_constraintGuide_percent="0.7" />
+
+    <!-- Right side: Actions -->
+    <LinearLayout
+        android:id="@+id/dialog_button_container"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/guideline"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <Button
+            android:id="@+id/dialog_positive_button"
+            style="@style/Widget.Material3.Button"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:nextFocusUp="@id/station_search_box_view"
+            android:nextFocusLeft="@id/station_search_result_list"
+            android:text="@string/dialog_find_station_button_add" />
+
+        <Button
+            android:id="@+id/dialog_negative_button"
+            style="@style/Widget.Material3.Button.TextButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:nextFocusLeft="@id/station_search_result_list"
+            android:text="@string/dialog_generic_button_cancel" />
+
+    </LinearLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout-television/dialog_generic_with_details.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="800dp"
+    android:layout_height="wrap_content"
+    android:padding="24dp">
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/dialog_message"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/dialog_error_message_default"
+        android:textAppearance="@style/TextAppearance.Material3.HeadlineSmall"
+        android:textColor="@color/text_default"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="@string/dialog_error_message_default" />
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/dialog_details_link"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="24dp"
+        android:focusable="true"
+        android:clickable="true"
+        android:background="?attr/selectableItemBackground"
+        android:padding="8dp"
+        android:text="@string/dialog_generic_details_button"
+        android:textAppearance="@style/TextAppearance.Material3.LabelLarge"
+        android:textColor="@color/text_default"
+        android:visibility="gone"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/dialog_message"
+        tools:text="@string/dialog_generic_details_button" />
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/dialog_details"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="12dp"
+        android:focusable="true"
+        android:clickable="true"
+        android:scrollbars="vertical"
+        android:text="@string/dialog_opml_import_details_default"
+        android:textAppearance="@style/TextAppearance.Material3.BodyLarge"
+        android:textColor="@color/text_default"
+        android:textIsSelectable="true"
+        android:visibility="gone"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/dialog_details_link"
+        tools:text="@string/dialog_opml_import_details_default" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout-television/dialog_language_selection.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_language_selection_title"
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:paddingBottom="16dp" />
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:scrollbars="vertical">
+
+        <RadioGroup
+            android:id="@+id/language_radio_group"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+        </RadioGroup>
+
+    </ScrollView>
+
+</LinearLayout>

app/src/main/res/layout-television/dialog_preset_selection.xml

@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_preset_selection_title"
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:paddingBottom="16dp" />
+
+    <RadioGroup
+        android:id="@+id/preset_radio_group"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <RadioButton
+            android:id="@+id/radio_preset_none"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_none"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_rock"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_rock"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_pop"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_pop"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_jazz"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_jazz"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_flat"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_flat"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+    </RadioGroup>
+
+</LinearLayout>

app/src/main/res/layout-television/dialog_theme_selection.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_theme_selection_title"
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:paddingBottom="16dp" />
+
+    <RadioGroup
+        android:id="@+id/theme_radio_group"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <RadioButton
+            android:id="@+id/radio_theme_follow_system"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_device_default"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_theme_light"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_light"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_theme_dark"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_dark"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+    </RadioGroup>
+
+</LinearLayout>

app/src/main/res/layout-television/element_search_result.xml

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginBottom="8dp"
+    android:focusable="true"
+    android:clickable="true"
+    android:nextFocusRight="@+id/dialog_negative_button"
+    android:background="@drawable/selector_search_result_item">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp">
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/station_name"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:ellipsize="marquee"
+            android:marqueeRepeatLimit="marquee_forever"
+            android:singleLine="true"
+            android:textAppearance="@style/TextAppearance.Material3.TitleLarge"
+            android:textColor="@color/text_default"
+            android:textStyle="bold"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            tools:text="Station Name" />
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/station_url"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="4dp"
+            android:ellipsize="marquee"
+            android:marqueeRepeatLimit="marquee_forever"
+            android:singleLine="true"
+            android:textAppearance="@style/TextAppearance.Material3.BodyLarge"
+            android:textColor="@color/text_lightweight"
+            app:layout_constraintEnd_toEndOf="@+id/station_name"
+            app:layout_constraintStart_toStartOf="@+id/station_name"
+            app:layout_constraintTop_toBottomOf="@+id/station_name"
+            tools:text="http://stream.url" />
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/station_bitrate"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="2dp"
+            android:singleLine="true"
+            android:textAppearance="@style/TextAppearance.Material3.LabelLarge"
+            android:textColor="@color/text_lightweight"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="@+id/station_url"
+            app:layout_constraintStart_toStartOf="@+id/station_url"
+            app:layout_constraintTop_toBottomOf="@+id/station_url"
+            tools:text="128 kbps" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</LinearLayout>

app/src/main/res/layout-television/fragment_player.xml

@@ -0,0 +1,207 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="horizontal"
+    android:baselineAligned="false">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="1">
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/station_list"
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:clipToPadding="false"
+            android:padding="8dp"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <include
+            layout="@layout/element_onboarding"
+            android:visibility="gone" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <ScrollView
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="1.2"
+        android:background="@color/player_sheet_background"
+        android:fillViewport="true">
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:id="@+id/player_ui"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:padding="24dp">
+
+            <com.google.android.material.imageview.ShapeableImageView
+                android:id="@+id/station_icon"
+                android:layout_width="160dp"
+                android:layout_height="160dp"
+                android:layout_marginTop="16dp"
+                android:background="@drawable/shape_cover_small"
+                android:contentDescription="@string/descr_player_station_image"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toTopOf="parent"
+                app:shapeAppearanceOverlay="@style/RoundedCorners"
+                app:srcCompat="@drawable/ic_default_station_image_72dp" />
+
+            <com.google.android.material.textview.MaterialTextView
+                android:id="@+id/player_station_name"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:ellipsize="marquee"
+                android:marqueeRepeatLimit="marquee_forever"
+                android:singleLine="true"
+                android:textAlignment="center"
+                android:textAppearance="@style/TextAppearance.Material3.HeadlineMedium"
+                android:textColor="@color/player_sheet_text_main"
+                android:textStyle="bold"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/station_icon"
+                tools:text="Station Name" />
+
+            <com.google.android.material.textview.MaterialTextView
+                android:id="@+id/player_station_metadata"
+                android:marqueeRepeatLimit="marquee_forever"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:ellipsize="marquee"
+                android:singleLine="true"
+                android:textAlignment="center"
+                android:textAppearance="@style/TextAppearance.Material3.BodyLarge"
+                android:textColor="@color/player_sheet_text_main"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/player_station_name"
+                tools:text="Artist - Title" />
+
+            <LinearLayout
+                android:id="@+id/controls_row"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="24dp"
+                android:gravity="center"
+                android:orientation="horizontal"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/player_station_metadata">
+
+                <ImageButton
+                    android:id="@+id/player_prev_button"
+                    android:layout_width="60dp"
+                    android:layout_height="60dp"
+                    android:layout_marginEnd="16dp"
+                    android:background="@drawable/selector_generic_button_focus"
+                    android:contentDescription="@string/descr_expanded_player_metadata_previous_button"
+                    android:focusable="true"
+                    android:padding="12dp"
+                    app:srcCompat="@drawable/ic_chevron_left_24dp" />
+
+                <ImageButton
+                    android:id="@+id/player_play_button"
+                    android:layout_width="80dp"
+                    android:layout_height="80dp"
+                    android:background="@drawable/selector_play_button"
+                    android:contentDescription="@string/descr_player_playback_button"
+                    android:focusable="true"
+                    android:scaleType="center"
+                    app:srcCompat="@drawable/ic_player_play_symbol_42dp" />
+
+                <ImageButton
+                    android:id="@+id/player_next_button"
+                    android:layout_width="60dp"
+                    android:layout_height="60dp"
+                    android:layout_marginStart="16dp"
+                    android:background="@drawable/selector_generic_button_focus"
+                    android:contentDescription="@string/descr_expanded_player_metadata_next_button"
+                    android:focusable="true"
+                    android:padding="12dp"
+                    app:srcCompat="@drawable/ic_chevron_right_24dp" />
+
+            </LinearLayout>
+
+            <LinearLayout
+                android:id="@+id/secondary_controls_row"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="12dp"
+                android:gravity="center"
+                android:orientation="horizontal"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/controls_row">
+
+                <ImageButton
+                    android:id="@+id/copy_station_metadata_button"
+                    android:layout_width="48dp"
+                    android:layout_height="48dp"
+                    android:layout_marginEnd="12dp"
+                    android:background="@drawable/selector_generic_button_focus"
+                    android:focusable="true"
+                    android:padding="8dp"
+                    app:srcCompat="@drawable/ic_copy_content_24dp"
+                    tools:ignore="ContentDescription" />
+
+                <ImageButton
+                    android:id="@+id/sleep_timer_start_button"
+                    android:layout_width="48dp"
+                    android:layout_height="48dp"
+                    android:layout_marginEnd="12dp"
+                    android:background="@drawable/selector_generic_button_focus"
+                    android:focusable="true"
+                    android:padding="8dp"
+                    app:srcCompat="@drawable/ic_sleep_timer_24dp"
+                    tools:ignore="ContentDescription" />
+
+                <ImageButton
+                    android:id="@+id/sleep_timer_cancel_button"
+                    android:layout_width="48dp"
+                    android:layout_height="48dp"
+                    android:background="@drawable/selector_generic_button_focus"
+                    android:focusable="true"
+                    android:padding="8dp"
+                    android:visibility="gone"
+                    app:srcCompat="@drawable/ic_clear_24dp"
+                    tools:ignore="ContentDescription" />
+
+            </LinearLayout>
+
+            <ProgressBar
+                android:id="@+id/player_buffering_indicator"
+                style="?android:attr/progressBarStyleLarge"
+                android:layout_width="96dp"
+                android:layout_height="96dp"
+                android:indeterminateTint="@color/player_button_buffering"
+                android:visibility="invisible"
+                app:layout_constraintBottom_toBottomOf="@+id/controls_row"
+                app:layout_constraintEnd_toEndOf="@+id/controls_row"
+                app:layout_constraintStart_toStartOf="@+id/controls_row"
+                app:layout_constraintTop_toTopOf="@+id/controls_row" />
+
+            <com.google.android.material.textview.MaterialTextView
+                android:id="@+id/sleep_timer_remaining_time"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="12dp"
+                android:textAppearance="@style/TextAppearance.Material3.BodyMedium"
+                android:textColor="@color/player_sheet_text_main"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/secondary_controls_row"
+                tools:text="15:00" />
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+    </ScrollView>
+
+</LinearLayout>

app/src/main/res/layout-television/preference_visualizer.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:id="@+id/visualizer_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="#FF000000"
+        android:focusable="true" />
+
+</LinearLayout>

app/src/main/res/layout/activity_main.xml

@@ -4,6 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:background="?android:attr/colorBackground"
     android:fitsSystemWindows="true"
     tools:context=".MainActivity">
 
@@ -29,4 +30,49 @@
         app:layout_constraintTop_toBottomOf="@+id/main_toolbar"
         app:navGraph="@navigation/nav_graph_main" />
 
+    <!-- SPLASH / LOADING SCREEN -->
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/loading_layout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/splashBackgroundColor"
+        android:elevation="10dp"
+        android:visibility="visible">
+
+        <ImageView
+            android:id="@+id/loading_logo"
+            android:layout_width="160dp"
+            android:layout_height="160dp"
+            android:contentDescription="@string/icon_launcher"
+            android:src="@mipmap/ic_launcher"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="0.4" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="24dp"
+            android:text="@string/loading"
+            android:textAppearance="@style/TextAppearance.Material3.HeadlineSmall"
+            android:textColor="@color/default_neutral_white"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/loading_logo" />
+
+        <ProgressBar
+            style="?android:attr/progressBarStyleHorizontal"
+            android:layout_width="200dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:indeterminate="true"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/loading_logo"
+            android:visibility="invisible" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/bottom_sheet_playback_controls.xml

@@ -56,7 +56,8 @@
         android:layout_marginStart="12dp"
         android:layout_marginEnd="12dp"
         android:layout_marginBottom="8dp"
-        android:ellipsize="end"
+        android:ellipsize="marquee"
+        android:marqueeRepeatLimit="marquee_forever"
         android:letterSpacing="0"
         android:singleLine="true"
         android:textAlignment="center"
@@ -211,6 +212,18 @@
         app:layout_constraintTop_toBottomOf="@+id/sheet_previous_metadata_button"
         app:srcCompat="@drawable/ic_copy_content_24dp" />
 
+    <androidx.mediarouter.app.MediaRouteButton
+        android:id="@+id/media_route_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:padding="8dp"
+        app:layout_constraintBottom_toBottomOf="@+id/copy_station_metadata_button"
+        app:layout_constraintStart_toEndOf="@+id/copy_station_metadata_button"
+        app:layout_constraintTop_toTopOf="@+id/copy_station_metadata_button"
+        app:mediaRouteButtonTint="@color/player_sheet_text_main" />
+
     <com.google.android.material.textview.MaterialTextView
         android:id="@+id/sheet_bitrate_view"
         android:layout_width="wrap_content"
@@ -290,4 +303,4 @@
         android:visibility="gone"
         app:constraint_referenced_ids="sleep_timer_remaining_time,sleep_timer_cancel_button" />
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/card_add_new_station.xml

@@ -12,6 +12,8 @@
         android:layout_marginStart="8dp"
         android:layout_marginTop="10dp"
         android:layout_marginBottom="24dp"
+        android:focusable="true"
+        android:clickable="true"
         android:stateListAnimator="@null"
         app:backgroundTint="@color/list_card_background"
         app:icon="@drawable/ic_add_24dp"
@@ -20,6 +22,24 @@
         app:strokeColor="@color/list_card_stroke_background"
         app:strokeWidth="3dp" />
 
+    <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
+        android:id="@+id/card_visualizer"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="end"
+        android:layout_marginTop="10dp"
+        android:layout_marginEnd="70dp"
+        android:layout_marginBottom="24dp"
+        android:focusable="true"
+        android:clickable="true"
+        android:stateListAnimator="@null"
+        app:backgroundTint="@color/list_card_background"
+        app:icon="@drawable/ic_visualizer_24dp"
+        app:iconTint="@color/icon_default"
+        app:rippleColor="@color/list_card_stroke_background"
+        app:strokeColor="@color/list_card_stroke_background"
+        app:strokeWidth="3dp" />
+
     <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
         android:id="@+id/card_settings"
         android:layout_width="wrap_content"
@@ -28,6 +48,8 @@
         android:layout_marginTop="10dp"
         android:layout_marginEnd="8dp"
         android:layout_marginBottom="24dp"
+        android:focusable="true"
+        android:clickable="true"
         android:stateListAnimator="@null"
         app:backgroundTint="@color/list_card_background"
         app:icon="@drawable/ic_settings_24dp"

app/src/main/res/layout/card_station.xml

@@ -61,6 +61,17 @@
             app:shapeAppearanceOverlay="@style/RoundedCorners"
             app:srcCompat="@drawable/ic_image_white_36dp" />
 
+        <CheckBox
+            android:id="@+id/reorder_checkbox"
+            android:layout_width="24dp"
+            android:layout_height="24dp"
+            android:foregroundTint="@color/icon_default"
+            android:visibility="gone"
+            app:layout_constraintBottom_toBottomOf="@+id/station_icon"
+            app:layout_constraintStart_toEndOf="@+id/starred_icon"
+            app:layout_constraintTop_toTopOf="@+id/station_icon" 
+            tools:visibility="visible" />
+
         <ImageView
             android:id="@+id/starred_icon"
             android:layout_width="wrap_content"
@@ -86,7 +97,7 @@
             android:textColor="@color/text_lightweight"
             app:layout_constraintBottom_toBottomOf="@+id/station_icon"
             app:layout_constraintEnd_toStartOf="@+id/playback_button"
-            app:layout_constraintStart_toEndOf="@+id/starred_icon"
+            app:layout_constraintStart_toEndOf="@+id/reorder_checkbox"
             app:layout_constraintTop_toTopOf="@+id/station_icon"
             tools:text="@string/sample_text_station_name" />
 

app/src/main/res/layout/dialog_language_selection.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_language_selection_title"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:paddingBottom="12dp" />
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:scrollbars="vertical">
+
+        <RadioGroup
+            android:id="@+id/language_radio_group"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+        </RadioGroup>
+
+    </ScrollView>
+
+</LinearLayout>

app/src/main/res/layout/dialog_preset_selection.xml

@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_preset_selection_title"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:paddingBottom="12dp" />
+
+    <RadioGroup
+        android:id="@+id/preset_radio_group"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <RadioButton
+            android:id="@+id/radio_preset_none"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_none"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_preset_rock"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_rock"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_preset_pop"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_pop"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_preset_jazz"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_jazz"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_preset_flat"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_flat"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+    </RadioGroup>
+
+</LinearLayout>

app/src/main/res/layout/dialog_theme_selection.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_theme_selection_title"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:paddingBottom="12dp" />
+
+    <RadioGroup
+        android:id="@+id/theme_radio_group"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <RadioButton
+            android:id="@+id/radio_theme_follow_system"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_device_default"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_theme_light"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_light"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_theme_dark"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_dark"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+    </RadioGroup>
+
+</LinearLayout>

app/src/main/res/layout/preference_visualizer.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:id="@+id/visualizer_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="#FF000000" />
+
+</LinearLayout>

app/src/main/res/menu/expanded_controller.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/media_route_menu_item"
+        android:title="@string/media_route_menu_title"
+        app:actionProviderClass="androidx.mediarouter.app.MediaRouteActionProvider"
+        app:showAsAction="always" />
+
+</menu>

app/src/main/res/mipmap-anydpi-v26/ic_banner.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_banner_background"/>
+    <foreground android:drawable="@mipmap/ic_banner_foreground"/>
+</adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_channel.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_channel_background"/>
+    <foreground android:drawable="@mipmap/ic_channel_foreground"/>
+</adaptive-icon>

app/src/main/res/navigation/nav_graph_main.xml

@@ -13,12 +13,43 @@
         <action
             android:id="@+id/action_map_fragment_to_settings_fragment"
             app:destination="@id/settings_destination" />
+        <action
+            android:id="@+id/action_map_fragment_to_visualizer_fragment"
+            app:destination="@id/visualizer_destination" />
+        <action
+            android:id="@+id/action_map_fragment_to_player_to_add_station"
+            app:destination="@id/add_station_destination" />
     </fragment>
 
     <!-- SETTINGS -->
     <fragment
         android:id="@+id/settings_destination"
         android:name="com.michatec.radio.SettingsFragment"
-        android:label="Settings" />
+        android:label="Settings">
+        <action
+            android:id="@+id/action_settings_to_equalizer"
+            app:destination="@id/equalizer_destination" />
+        <action
+            android:id="@+id/action_settings_to_visualizer"
+            app:destination="@id/visualizer_destination" />
+    </fragment>
 
-</navigation>
+    <!-- EQUALIZER -->
+    <fragment
+        android:id="@+id/equalizer_destination"
+        android:name="com.michatec.radio.EqualizerFragment"
+        android:label="Equalizer" />
+
+    <!-- VISUALIZER -->
+    <fragment
+        android:id="@+id/visualizer_destination"
+        android:name="com.michatec.radio.VisualizerFragment"
+        android:label="Visualizer" />
+
+    <!-- ADD STATION (TV) -->
+    <fragment
+        android:id="@+id/add_station_destination"
+        android:name="com.michatec.radio.AddStationFragment"
+        android:label="Add Station"
+        tools:layout="@layout/dialog_find_station" />
+</navigation>

app/src/main/res/values-da/strings.xml

@@ -60,12 +60,13 @@
     <string name="pref_buffer_size_title">Brug større buffer</string>
     <string name="pref_edit_station_stream_summary_disabled">Redigering af stream-links er deaktiveret.</string>
     <string name="pref_edit_station_stream_summary_enabled">Redigering af stream-links er aktiveret. Sørg for at angive en korrekt streamadresse.</string>
+    <string name="pref_edit_station_stream_title">Rediger stream-links</string>
     <string name="pref_edit_station_summary_disabled">Redigering af stationsoplysninger er deaktiveret.</string>
     <string name="pref_edit_station_summary_enabled">Redigering er aktiveret. Langt tryk for at redigere.</string>
     <string name="pref_edit_station_title">Rediger station</string>
     <string name="pref_general_title">Generelt</string>
     <string name="pref_license_title">Denne app er open source</string>
-    <string name="pref_license_summary">Licenseret under MIT-licensen</string>
+    <string name="pref_license_summary">Licenseret under GPLv3-licensen</string>
     <string name="pref_links_title">Links</string>
     <string name="pref_m3u_export_summary">Gem stationer som M3U-playlister til brug i andre afspillere.</string>
     <string name="pref_m3u_export_title">Eksportér M3U-playliste</string>
@@ -110,4 +111,45 @@
     <!-- Snackbars -->
     <string name="snackbar_show">Vis</string>
     <string name="snackbar_update_available">er tilgængelig!</string>
+    <!-- Language Selection -->
+    <string name="pref_language_selection_title">Sprog</string>
+    <string name="pref_language_selection_summary">Aktuelt sprog</string>
+    <string name="pref_language_system">🗺️ System</string>
+    <!-- Settings -->
+    <string name="pref_update_collection_title">Opdater stationer</string>
+    <string name="pref_update_collection_summary">Download den nyeste version af alle stationer.</string>
+    <string name="dialog_yes_no_message_update_collection">Download den nyeste version af alle stationer?</string>
+    <string name="dialog_yes_no_positive_button_update_collection">Opdater</string>
+    <string name="pref_audio_effects_title">Lydeffekter</string>
+    <string name="pref_bass_boost_title">Bas-forstærkning</string>
+    <string name="pref_bass_boost_summary">Øg basforstærkningen.</string>
+    <string name="pref_reverb_title">Hall</string>
+    <string name="pref_reverb_summary">Juster hall-blanding.</string>
+    <string name="pref_drc_title">Dynamisk rækkeviddekomprimering</string>
+    <string name="pref_drc_summary">Komprimer det dynamiske område for konsistent lydstyrke.</string>
+    <string name="pref_eq_low_title">Equalizer: 31 Hz</string>
+    <string name="pref_eq_mid_title">Equalizer: 125 Hz</string>
+    <string name="pref_eq_high_title">Equalizer: 4 kHz</string>
+    <string name="pref_eq_band_1_title">Equalizer: 62 Hz</string>
+    <string name="pref_eq_band_2_title">Equalizer: 250 Hz</string>
+    <string name="pref_eq_band_3_title">Equalizer: 500 Hz</string>
+    <string name="pref_eq_band_4_title">Equalizer: 1 kHz</string>
+    <string name="pref_eq_band_5_title">Equalizer: 2 kHz</string>
+    <string name="pref_eq_band_6_title">Equalizer: 8 kHz</string>
+    <string name="pref_eq_band_7_title">Equalizer: 16 kHz</string>
+    <string name="pref_equalizer_title">Equalizer</string>
+    <string name="pref_equalizer_summary">Juster lydfrekvenserne.</string>
+    <string name="pref_equalizer_summary_off">Justering af lydfrekvenserne er deaktiveret.</string>
+    <string name="pref_equalizer_reset_title">Nulstil equalizer</string>
+    <string name="pref_preset_selection_title">Vælg forudindstilling</string>
+    <string name="pref_preset_selection_summary">Vælg en lydforudindstilling</string>
+    <string name="pref_preset_none">Ingen (Manuel)</string>
+    <string name="pref_preset_rock">Rock</string>
+    <string name="pref_preset_pop">Pop</string>
+    <string name="pref_preset_jazz">Jazz</string>
+    <string name="pref_preset_flat">Flad</string>
+    <string name="loading">Indlæser…</string>
+    <string name="media_route_menu_title">Cast</string>
+    <string name="pref_visualizer_title">Spektrumanalysator</string>
+    <string name="pref_visualizer_summary">Vis spektrumanalysatoren.</string>
 </resources>

app/src/main/res/values-de/strings.xml

@@ -69,8 +69,13 @@
     <string name="pref_edit_station_summary_enabled">Die Bearbeitung von Senderinformationen ist aktiviert. Drücke lange, um den Bearbeitungsmodus aufzurufen.</string>
     <string name="pref_edit_station_title">Sender bearbeiten</string>
     <string name="pref_general_title">Allgemein</string>
+    <!-- Language Selection -->
+    <string name="pref_language_selection_title">Sprache</string>
+    <string name="pref_language_selection_summary">Aktuelle Sprache</string>
+    <string name="pref_language_system">🗺️ System</string>
+    <string name="pref_language_en" translatable="false">🇬🇧 Englisch</string>
     <string name="pref_license_title">Diese Anwendung ist Open Source</string>
-    <string name="pref_license_summary">Lizenziert unter der MIT License</string>
+    <string name="pref_license_summary">Lizenziert unter der GPLv3 License</string>
     <string name="pref_links_title">Links</string>
     <string name="pref_m3u_export_summary">Radiosender in einer M3U-Playlistdatei sichern, die in andere Player importiert werden können.</string>
     <string name="pref_m3u_export_title">M3U-Playlist exportieren</string>
@@ -117,4 +122,36 @@
     <!-- Snackbars -->
     <string name="snackbar_show">Zeigen</string>
     <string name="snackbar_update_available">ist verfügbar!</string>
+    <string name="pref_audio_effects_title">Audio-Effekte</string>
+    <string name="pref_bass_boost_title">Bass-Boost</string>
+    <string name="pref_bass_boost_summary">Erhöhen Sie die Bassverstärkung.</string>
+    <string name="pref_reverb_title">Hall</string>
+    <string name="pref_reverb_summary">Reverb-Mix anpassen.</string>
+    <string name="pref_drc_title">Dynamikkompression</string>
+    <string name="pref_drc_summary">Den Dynamikbereich für eine gleichbleibende Lautstärke komprimieren.</string>
+    <string name="pref_eq_low_title">Equalizer: 31 Hz</string>
+    <string name="pref_eq_mid_title">Equalizer: 2 kHz</string>
+    <string name="pref_eq_high_title">Equalizer: 16 kHz</string>
+    <string name="pref_eq_band_1_title">Equalizer: 62 Hz</string>
+    <string name="pref_eq_band_2_title">Equalizer: 125 Hz</string>
+    <string name="pref_eq_band_3_title">Equalizer: 250 Hz</string>
+    <string name="pref_eq_band_4_title">Equalizer: 500 Hz</string>
+    <string name="pref_eq_band_5_title">Equalizer: 1 kHz</string>
+    <string name="pref_eq_band_6_title">Equalizer: 4 kHz</string>
+    <string name="pref_eq_band_7_title">Equalizer: 8 kHz</string>
+    <string name="pref_equalizer_title">Equalizer</string>
+    <string name="pref_equalizer_summary">Passen Sie die Audio-Frequenzen an.</string>
+    <string name="pref_equalizer_summary_off">Das Anpassen von den Audio-Frequenzen ist deaktiviert.</string>
+    <string name="pref_equalizer_reset_title">Equalizer zurücksetzen</string>
+    <string name="pref_preset_selection_title">Preset auswählen</string>
+    <string name="pref_preset_selection_summary">Wählen Sie ein Klangprofil</string>
+    <string name="pref_preset_none">Keines (Manuell)</string>
+    <string name="pref_preset_rock">Rock</string>
+    <string name="pref_preset_pop">Pop</string>
+    <string name="pref_preset_jazz">Jazz</string>
+    <string name="pref_preset_flat">Flach</string>
+    <string name="media_route_menu_title">Streamen</string>
+    <string name="pref_visualizer_title">Spektrumanzeige</string>
+    <string name="pref_visualizer_summary">Sehe die Spektrumanzeige.</string>
+    <string name="loading">Lade…</string>
 </resources>