Program: 36447
Project: 36447
Buggy source:
@Override public void createPlayback(Item item,PlaybackState state,Runnable onOk,Runnable onFail){
  Player.IO_THREAD.execute(() -> {
    Media media;
    try {
      media=new Media(item.getUri().toString());
    }
 catch (    MediaException e) {
      log(JavaFxPlayer.class).error("String_Node_Str",item.getUri());
      onFail.run();
      return;
    }
    runFX(() -> {
      player=new MediaPlayer(media);
      player.setStartTime(Duration.ZERO);
      player.setAudioSpectrumInterval(0.01);
      player.setAudioSpectrumNumBands(128);
      player.setAudioSpectrumListener(PLAYBACK.spectrumListenerDistributor);
      d1=maintain(state.volume,player.volumeProperty());
      d2=maintain(state.mute,player.muteProperty());
      d3=maintain(state.balance,player.balanceProperty());
      d4=maintain(state.rate,player.rateProperty());
      player.setOnEndOfMedia(PLAYBACK.onPlaybackEnd);
      player.statusProperty().addListener(new ChangeListener<>(){
        @Override public void changed(        ObservableValue<? extends Status> o,        Status ov,        Status nv){
          if (nv == PLAYING || nv == PAUSED || nv == STOPPED) {
            d5=maintain(player.currentTimeProperty(),state.currentTime);
            d7=maintain(player.statusProperty(),state.status);
            player.statusProperty().removeListener(this);
          }
        }
      }
);
      player.statusProperty().addListener((o,ov,nv) -> {
        if (nv == PLAYING || nv == PAUSED) {
          if (PLAYBACK.startTime != null) {
            seek(PLAYBACK.startTime);
            PLAYBACK.startTime=null;
          }
        }
      }
);
      Status s=state.status.get();
      if (PLAYBACK.startTime != null) {
        if (s == PLAYING)         play();
 else         if (s == PAUSED)         pause();
      }
      onOk.run();
    }
);
  }
);
}

Fixed version (ground truth):
@Override public void createPlayback(Item item,PlaybackState state,Runnable onOk,Runnable onFail){
  Player.IO_THREAD.execute(() -> {
    Media media;
    try {
      media=new Media(item.getUri().toString());
    }
 catch (    MediaException e) {
      log(JavaFxPlayer.class).error("String_Node_Str",item.getUri());
      onFail.run();
      return;
    }
    runFX(() -> {
      player=new MediaPlayer(media);
      player.setStartTime(Duration.ZERO);
      player.setAudioSpectrumInterval(0.01);
      player.setAudioSpectrumNumBands(128);
      player.setAudioSpectrumListener(PLAYBACK.spectrumListenerDistributor);
      d1=maintain(state.volume,v -> linToLog(v.doubleValue()),player.volumeProperty());
      d2=maintain(state.mute,player.muteProperty());
      d3=maintain(state.balance,player.balanceProperty());
      d4=maintain(state.rate,player.rateProperty());
      player.setOnEndOfMedia(PLAYBACK.onPlaybackEnd);
      player.statusProperty().addListener(new ChangeListener<>(){
        @Override public void changed(        ObservableValue<? extends Status> o,        Status ov,        Status nv){
          if (nv == PLAYING || nv == PAUSED || nv == STOPPED) {
            d5=maintain(player.currentTimeProperty(),state.currentTime);
            d7=maintain(player.statusProperty(),state.status);
            player.statusProperty().removeListener(this);
          }
        }
      }
);
      player.statusProperty().addListener((o,ov,nv) -> {
        if (nv == PLAYING || nv == PAUSED) {
          if (PLAYBACK.startTime != null) {
            seek(PLAYBACK.startTime);
            PLAYBACK.startTime=null;
          }
        }
      }
);
      Status s=state.status.get();
      if (PLAYBACK.startTime != null) {
        if (s == PLAYING)         play();
 else         if (s == PAUSED)         pause();
      }
      onOk.run();
    }
);
  }
);
}