title: Sound does not play in background tab
body: <p>I've a small Extension which keeps checking for some data on a website.</p>
  <p>On specific event it plays a sound file using:</p>
  <pre><code>document.getElementById(&quot;audio-beep1&quot;).play();
  </code></pre>
  <p>However practically this page isn't the foreground page since I'll be working on some other tab so this sound does not play even though event is detected.</p>
  <p>So as I click this tab - sound plays.</p>
  <p>Is there any way the sound will play on event even if the tab isn't the foreground one?</p>