title: Read byte array from audio file and play file using AudioTrack
body: <p>I want to read the audio file from sdcard into byte array. and play the file using this byte array into AudioTrack.</p>
  
  <p>Like AudioTrack play file in this way</p>
  
  <pre><code>   track.play();                       
     track.write(byte_Arr,0,byte_Arr.length);
  </code></pre>