// Create new instance.
var audioPlayer = new AudioPlayer(id: 0)
..stream.listen(
  (Audio audio) {
    // Listen to playback events.
  },
);
// Load audio source
audioPlayer.load(
  new AudioSource.fromFile(
    new File('/home/alexmercerind/music.mp3'),
  ),
);
// Start playback.
audioPlayer.play();
// Get audio duration.
audioPlayer.audio.duration;
// Change playback volume.
audioPlayer.setVolume(0.5);
// Change playback position.
audioPlayer.setPosition(Duration(seconds: 10));
// Get playback position.
audioPlayer.audio.position;
Timer(Duration(seconds: 10), () {
    // Pause playback.
    audioPlayer.pause();
}
// Few other things.
audioPlayer.audio.file;
audioPlayer.audio.isPlaying;
audioPlayer.audio.isCompleted;
audioPlayer.audio.isStopped;