title: HTML5 Audio source with special headers
body: <p>The thing is: I need to play a streaming sound with HTML5 using audio tag, but the problem is that to access that sound I have to request a REST API that need an special header in the request.
  So the source audio is in: <a href="http://mydomain.com/aapi/source/1234" rel="noreferrer">http://mydomain.com/aapi/source/1234</a>
  But it only works if I request it with some header like this:</p>
  
  <pre><code>'x-sk-apiKey' : 'APIKey',
  'x-sk-version' : '1.0',
  'x-sk-client' : 'iPhone',
  'x-sk-device-id' : 'device-id'
  'x-sk-device-id' : 'device-id'
  'x-sk-token' : '12332424r3fwd23r2cdscadscsd234234'
  </code></pre>
  
  <p>Is it posible to set audio src attribute to some javascript function like:</p>
  
  <pre><code>&lt;script&gt;
  
  onButtonClick(){
    audio = document.getElementById('audio');
    audio.src=ajax.requestWithHeader('http://mydomain.com/aapi/source/1234');
    audio.play();
  }
  &lt;/script&gt;
  </code></pre>
  
  <p>In this case, setting up something like a PHP proxy for doing the request is not allowed.</p>
  
  <p>Thanks!!
  Nacho</p>