title: HTTP "Content-Type" "application/octet-stream" is not supported in Firefox
body: <p>I was just deploying my very first Ruby on Rails application to Engine Yard, and now the media player does not work in Firefox.</p>
  
  <p>So far I am only supporting Opera, Chrome and Safari. On the local test server the media player was working as well with Firefox. I am using the very basic HTML5 player.</p>
  
  <pre><code>&lt;audio id="audio_&lt;%=i%&gt;" controls="controls" height="100" width="200" title="Variante &lt;%= @ind_titel[i]%&gt;"&gt;   
      &lt;source src='/audio/mp3/&lt;%=value%&gt;.mp3' type="audio/mp3" /&gt;                             
      &lt;source src='/audio/ogg/&lt;%=value%&gt;.ogg' type="audio/ogg" /&gt;                       
  &lt;embed height="100" width="100" src='/audio/mp3/&lt;%=value%&gt;.mp3' /&gt;
  &lt;/audio&gt;
  </code></pre>
  
  <p>Firebug gives me something like:</p>
  
  <pre><code>HTTP "Content-Type" "application/octet-stream" is not supported in Firefox
  </code></pre>
  
  <p><strong>Edit:</strong>
  I have changed now the /etc/nginx/mime.types on the Server and added the lines:</p>
  
  <pre><code>application/ogg ogg ogx;
  audio/ogg oga;
  </code></pre>
  
  <p>But it still does not work...
  According to this instruction: <a href="http://9elements.com/io/?p=306" rel="nofollow">http://9elements.com/io/?p=306</a></p>
  
  <p>I have tried to change as well the config/initializers/mime_types.rb
  with the given lines but my local test server didnt even start with this code.</p>