title: What is the meaning of "Only raw PCM 16 bits mono files with the same frequency as the current voice are supported by the audio tag."?
body: <p>When trying to use the HTML5 <code>&lt;audio&gt;</code> tag, I get this error:</p>
  
  <blockquote>
    <p>Only raw PCM 16 bits mono files with the same frequency as the current
    voice are supported by the audio tag.</p>
  </blockquote>
  
  <p>What does this mean?</p>