hlThread.requestTerminate(); hlThread = null;
bgHowLoud.requestTerminate(); bgHowLoud = null;
  protected void doDetach()  {    getApp().removeTrackLifeCycleListener(this);    getApp().removeDownloadListener(this);    getApp().removeVolumePolicy(this);    hlThread.requestTerminate();    hlThread = null;      // To do: Clean up any dangling stuff in downloadHash    downloadHash = null;  }