title: Programmatically convert M4A to MP3
body: <p>I want to create a tool where you can enter a lot of <code>.m4a</code> files, then it converts them to <code>.mp3</code> and sorts them by <code>id3</code> tags.</p>
  
  <p>The code for sorting is already complete and works really well but I can't find sample code that converts <code>.m4a</code> to <code>.mp3</code>.</p>
  
  <p>Anyone have some nice snippet/link/hint I can use?</p>