hlThread.queue(track);
bgHowLoud.queue(track);
  private void check(Track track)  {      // If we don't know how loud it is, queue it to be processed.    if (track.getProperty("loudness") == null) {      try {        hlThread.queue(track);      }      catch (FileNotFoundException e) {        System.err.println("auto-normalize: Warning - File not found when trying to determine loudness of "+track);      }    }  }