title: content type for mp3 download response
body: <p>I have created a simple HTTP server which allows users to download files. But this does not seem to work for mp3 files. The content type currently is <code>"application/misc"</code>. In order to make it work with mp3 files , I've tried <code>"application/mp3"</code> , <code>"application/data"</code> and <code>"application/mpeg"</code>.</p>
  
  <p>What would be the right content type for mp3 or audio file download, and  am I missing some other headers?</p>
  
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  <p>EDIT: The file should automatically start downloading rather than prompting the user for saving it somewhere.</p>