title: Android display only mp3 with ACTION_GET_CONTENT
body: <p>I'm trying to display just MP3 files with:</p>
  
  <pre><code>Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
  intent.setType("audio/mp3");
  startActivityForResult(Intent.createChooser(intent, "Music File"), FIND_MUSIC);
  </code></pre>
  
  <p>But it ends up listing *.3gp files as well.  How can I limit to just *.mp3 files only?</p>
  
  <p>I've tried setType("mp3") but then the intent isn't able to find any app that loads the file.</p>