anchor.diff:  class SoundEffectStream {
     SoundEffectStream(
       this.sound,
  -    this.tag,
       this.loop,
       this.volume,
       this.pitch,
  
positive.code:         playingSound._player.ptr.start();
        });
  
        _playingSounds.add(playingSound);
        _mediaPlayers[sound] = playingSound._player;
      } else {
        // Reuse player
  
negative.code: 
    SoundEffectStream play(
      SoundEffect sound,
      [bool loop = false,
        double volume = 1.0,
        double pitch = 1.0,
        double pan = 0.0,
  