title: change Text to speech - TTS to ringer volume
body: <p>How can I control TTS Volume?
  I do not want to use AudioManager because audiomanager cannot set by press of the volume button on a Galaxy Tab (That I think it's a ringer volume).
  So, how can I change TTS speaker to ringer volume?</p>
  
  <p>OR how can I set output of text to speech to STREAM_RING?</p>
  
  <p>Thanks.</p>