title: Bluetooth audio streaming between android devices
body: <p>I made a research on the same topic and found that android devices are a2dp sources and the audio can be streamed only from an a2dp source to an a2dp sink. A2dp sink can be a bluetooth headset or a bluetooth speaker.</p>
  
  <p>But my question is then <em>how the android app named</em> "<a href="https://play.google.com/store/apps/details?id=com.ilumnis.btplayerfree&amp;hl=en">Bluetooth Music Player</a>" <strong><em>works</em></strong>?</p>
  
  <p>It allows streaming from one mobile to another. So in this case the listening mobile device must act as a sink. How this is possible?
  Are they using some other profile instead of a2dp?</p>
  
  <p>Ok, that may be a different profile what they are using. Because the application needs to be installed in the client side also.
  But how it becomes possible to stream voice from a <strong><em>bluetooth microphone to an android device</em></strong>?</p>
  
  <p>Please help.</p>