title: Ogg (theora / vorbis) playback in Firefox 3.6
body: <p>I have this html5 code, with a MP4 for Chrome (working), an OGG for Firefox (failing) and the same ogg via a java applet for Internet Explorer (working):
  <pre><code>&lt;video width="848" height="480"  controls="controls" autoplay="true" >
              &lt;source src="vernissage_cpal_2009.mp4" type="video/mp4" />
              &lt;source src="vernissage_cpal_2009.ogv" type="video/ogg" />
              &lt;applet code="com.fluendo.player.Cortado.class" archive="http://theora.org/cortado.jar" width="848" height="480">
                  &lt;param name="url" value="vernissage_cpal_2009.ogv" /> 
              &lt;/applet>
   &lt;/video></pre></code></p>
  
  <p>Firefox display a gray box with a X inside it. The file "vernissage_cpal_2009.ogv" also plays well inside normal media player, like VLC.</p>