public void addAudioFileTypes(String type){
  if (!type.startsWith(".")) {
    type="." + type;
  }
  if (!audioFileTypes.contains(type)) {
    audioFileTypes.add(type);
    firePropertyChange(AUDIO_FILE_TYPE,null,audioFileTypes);
  }
}

public void addAudioFileTypes ( String type ) { if ( ! type . startsWith ( "." ) ) { type = "." + type ; } if ( ! audioFileTypes . contains ( type ) ) { audioFileTypes . add ( type ) ; firePropertyChange ( AUDIO_FILE_TYPE , null , audioFileTypes ) ; } }
adds the audio file types .
