title: In iPhone, how to store audio file picked from media picker to some directory?
body: <p>How can I write an audio file picked from <code>mediaPicker</code> into some particular folder? We are currently writing image to file path with this method: </p>
  
  <pre><code>[UIImagePNGRepresentation(image) writeToFile:pngPath atomically:YES];
  </code></pre>
  
  <p>Is it possible for to do the same kind of thing with an audio file?</p>
  
  <p>Thanks.</p>