code: public AudioWife init(Context ctx, Uri uri) {
  
  		if (uri == null) {
  			throw new IllegalArgumentException("Uri cannot be null");
  		}
  
  		if (mAudioWife == null) {
  			mAudioWife = new AudioWife();
  		}
  
  		mUri = uri;
  
  		mProgressUpdateHandler = new Handler();
  
  		initPlayer(ctx);
  
  		return this;
  	}
docs: *
  Initialize the audio player. This method should be the first one to be called before starting
  to play audio using {@link nl.changer.audiowife.AudioWife}
  
  @param ctx
  {@link android.app.Activity} Context
  @param uri
  Uri of the audio to be played.
  **