title: Firefox media resource file.wav could not be decoded
body: <p>Using Firefox 36.0.1<br>
  File type: </p>
  
  <blockquote>
    <p>file.wav: setgid RIFF (little-endian) data, WAVE audio, ITU G.711
    A-law, mono 8000 Hz</p>
  </blockquote>
  
  <p>Firefox is failing to show <code>&lt;audio&gt;</code> tag, and in console complains as:</p>
  
  <blockquote>
    <p>Media resource <a href="http://.../file.wav" rel="nofollow noreferrer">http://.../file.wav</a> could not be decoded.</p>
  </blockquote>
  
  <p>From Chrome it works.<br>
  Any suggestions?</p>