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        <service android:name=".MusicService">
            <intent-filter>
                <action android:name="android.media.browse.MediaBrowserService"/>
            </intent-filter>
        </service>

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class MusicService : MediaBrowserServiceCompat() {
    
    override fun onLoadChildren(parentId: String, result: Result<MutableList<MediaBrowserCompat.MediaItem>>) {
    
    }

    override fun onGetRoot(clientPackageName: String, clientUid: Int, rootHints: Bundle?): BrowserRoot? {
        return BrowserRoot("", null)
    }
}

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   override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_player)
        val mediaSource = extractMediaSourceFromUri(Uri.parse("asset:///heart_attack.mp3"))
        val exoPlayer = ExoPlayerFactory.newSimpleInstance(
            baseContext, DefaultRenderersFactory(baseContext)
            , DefaultTrackSelector(),
            DefaultLoadControl()
        )
        exoPlayer.apply {

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    private fun extractMediaSourceFromUri(uri: Uri): MediaSource {
        val userAgent = Util.getUserAgent(this, "Exo")
        return ExtractorMediaSource.Factory(DefaultDataSourceFactory(this, userAgent))
            .setExtractorsFactory(DefaultExtractorsFactory()).createMediaSource(uri)
    }