/** Currently can only be read / set while broadcasting. */
 public float getSystemVolume() {
   return m_Stream.getVolume(AudioDeviceType.TTV_PLAYBACK_DEVICE);
 }
 /** Currently can only be read / set while broadcasting. */
 public float getMicrophoneVolume() {
   return m_Stream.getVolume(AudioDeviceType.TTV_RECORDER_DEVICE);
 }