title: Access binary data of <audio> src
body: <p>For some small hacking project I would like to load the raw data
  of an MP3 into an ArrayBuffer.</p>
  
  <pre><code>&lt;audio src="http://xyz.com/test.mp3"&gt;
  </code></pre>
  
  <p>I know that there are some basic functions exposed by an <code>&lt;audio&gt;</code> element but I was not able to find what I'm looking for. It is very likely that if there is such thing it is part of the Web Audio API and only works in Chrome by now.</p>