Apps Jet Player mute masks acting weird

[maest]

I was playing around with the Jet player and I noticed I can't use the mute masks properly.

public class touchCoord extends Activity {
    boolean muteMask[] = new boolean[1];
    boolean unmuteMask[] = new boolean[1];
    boolean playing, updateSucces;
    TextView log;
    JetPlayer jp;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        //default initialization
        playing = false;
        muteMask[0] = true;
        unmuteMask[0] = false;
        
        //JetPlayer stuff
        jp = JetPlayer.getJetPlayer();
        jp.loadJetFile(getApplicationContext().getResources().openRawResourceFd(R.raw.c1));
        jp.queueJetSegment(0, -1, -1, 0, 0, (byte) 0);
        jp.play();

        //finally set the TextView
        log = (TextView) findViewById(R.id.log);
        log.setText("waiting...");
    }
    
    @Override
    public boolean onTouchEvent(MotionEvent e)
    {
        if(e.getAction() == MotionEvent.ACTION_DOWN)
        {
            if(playing)
            {updateSucces = jp.setMuteArray(muteMask, false); playing = false; log.setText("not playing" + Boolean.toString(updateSucces));}
            else
            {updateSucces = jp.setMuteArray(unmuteMask, false); playing = true; log.setText("playing" + Boolean.toString(updateSucces));}
        }
        return true;
    }
    
}

The setMuteArray method returns false, so it fails.

The .jet file is pretty simple: 1 segment with only 1 track, no events.

If in onTouchEvent I use setMuteFlag() instead of the array it works just fine. Is there something wrong in the way I use the array? I can provide the .jet file as well if you need it.