public void playAudio(String key) {
   ResourceModel r = resources.get(key);
   if (r != null && r.getDataType().equals(ResourceModel.AUDIOSTREAM)) {
     AudioStream as = r.getAudioStream();
     AudioPlayer.player.start(as);
     r.setAudioStream(loadAudio(r.getFilePath()));
   }
 }
 public AudioStream getAudioStream(String resourceName) {
   ResourceModel rm = resources.get(resourceName);
   if (rm == null) return null;
   return rm.getAudioStream();
 }