Don't pause the audio when we hide the notif: shouldn't be necessary and could cause sound to stop mid-way if a prior notif times out while the sound from a later one is playing.

src/Notifier.js

@@ -100,9 +100,6 @@ var Notifier = {
 
         global.setTimeout(function() {
             notification.close();
-            if (audioClip) {
-                audioClip.pause();
-            }
         }, 5 * 1000);
         
     },