title: Audio files shared by bluetooth read-only
body: <p>In my app, a user can buy and download an audio file from Itunes.</p>
  
  <p>I would like other people (with a IOS, or Android) to listen to this audio file on their own smartphone, using a Bluetooth connection.</p>
  
  <p>Is it possible to develop these kinds of functionalities? Where could I find some information?</p>