title: Read mp3 metadata from assets folder
body: <p>I have an app with some mp3 files stored inside a subfolder of assets folder. 
  I obtain list of files in this way</p>
  
  <pre><code>context.getAssets().list("audio");
  </code></pre>
  
  <p>and results show it inside a listview.
  By doing this, what i see is a list of mp3 filenames. Now i don't want show filenames, but associated metadata for each file.</p>