code: public AudioWife setPauseView(View pause) {
  
  		if (pause == null) {
  			throw new NullPointerException("PauseView cannot be null");
  		}
  
  		if (mHasDefaultUi) {
  			Log.w(TAG, "Already using default UI. Setting pause view will have no effect");
  			return this;
  		}
  
  		mPauseButton = pause;
  
  		initOnPauseClick();
  		return this;
  	}
docs: *
  Sets the audio pause functionality on click event of the view passed in as a parameter. You
  can set {@link android.widget.Button} or an {@link android.widget.ImageView} as audio pause control. Audio pause
  functionality will be unavailable if this method is not called.
  
  @see nl.changer.audiowife.AudioWife#addOnPauseClickListener(android.view.View.OnClickListener)
  **