Added init version of audio support as poc.

app/assets/javascripts/app/controllers/navigation.js.coffee

@@ -39,6 +39,11 @@ class App.Navigation extends App.Controller
     @bind 'bell', (data) =>
       if data is 'on'
         @el.find('.bell').addClass('show')
+        App.Audio.play( 'https://www.sounddogs.com/previews/2193/mp3/219024_SOUNDDOGS__be.mp3' )
+        @delay(
+          -> App.Event.trigger('bell', 'off' )
+          3000
+        )
       else
         @el.find('.bell').removeClass('show')
 

app/assets/javascripts/app/lib/app_post/audio.js.coffee

@@ -0,0 +1,12 @@
+class App.Audio
+  @play: ( url, volume = 0.1 ) ->
+    return if !window.Audio
+    audio = new window.Audio()
+    return if !audio.canPlayType
+    canPlay = audio.canPlayType('audio/mp3')
+    return if canPlay isnt 'maybe' and canPlay isnt 'probably'
+    $(audio).prop( 'src', url )
+    audio.load();
+    audio.preload = "auto";
+    audio.volume = volume;
+    audio.play()