Midi ShortMessage Race Condition

[james lei]

I find often the MIDI sequencer played volume at 100% instead of 50% if the sequencer didn't completely started before the shortmessage is apply. Will addMetaListener help anyway to prevent race condition?

The seqencer is use to load MIDI file in it.

sequencer.start();
sleep(5); <- race condition
ShortMessage volMessage = new ShortMessage();
  for(int i=0;i<14;i++) {
    try{
      volMessage.setMessage(ShortMessage.CONTROL_CHANGE,i, 7, 50);
    } catch(InvalidMidiDataException e) {}
      midiReceiver.send(volMessage,-1);
  }

Will appreciate if there a way for addmetalistener tol execute the shortmessage once the Midi song is startedl