diff --git a/browser/base/content/tabbrowser.xml b/browser/base/content/tabbrowser.xml
index eb62e9b856f..673c5d8d456 100644
--- a/browser/base/content/tabbrowser.xml
+++ b/browser/base/content/tabbrowser.xml
@@ -4256,7 +4256,7 @@
           this.setIcon(tab, icon);
         ]]>
       </handler>
-      <handler event="DOMMediaPlaybackStarted">
+      <handler event="DOMAudioPlaybackStarted">
         <![CDATA[
           if (!Services.prefs.getBoolPref("browser.tabs.showAudioPlayingIcon") ||
               !event.isTrusted)
@@ -4273,7 +4273,7 @@
           }
         ]]>
       </handler>
-      <handler event="DOMMediaPlaybackStopped">
+      <handler event="DOMAudioPlaybackStopped">
         <![CDATA[
           if (!Services.prefs.getBoolPref("browser.tabs.showAudioPlayingIcon") ||
               !event.isTrusted)
diff --git a/dom/audiochannel/AudioChannelService.cpp b/dom/audiochannel/AudioChannelService.cpp
index 93a916b07b4..acd15aeaaaf 100644
--- a/dom/audiochannel/AudioChannelService.cpp
+++ b/dom/audiochannel/AudioChannelService.cpp
@@ -132,7 +132,7 @@ public:
     if (observerService) {
       observerService->NotifyObservers(
         ToSupports(mWindow),
-        "media-playback",
+        "audio-playback",
         mActive ? NS_LITERAL_STRING("active").get()
                 : NS_LITERAL_STRING("inactive").get());
     }
diff --git a/dom/base/test/test_audioNotification.html b/dom/base/test/test_audioNotification.html
index b035ecd9295..ce173d6fab2 100644
--- a/dom/base/test/test_audioNotification.html
+++ b/dom/base/test/test_audioNotification.html
@@ -17,7 +17,7 @@ var expectedNotification = null;
 
 var observer = {
   observe: function(subject, topic, data) {
-    is(topic, "media-playback", "media-playback received");
+    is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     runTest();
   }
@@ -35,7 +35,7 @@ var tests = [
   },
 
   function() {
-    observerService.addObserver(observer, "media-playback", false);
+    observerService.addObserver(observer, "audio-playback", false);
     ok(true, "Observer set");
     runTest();
   },
@@ -51,7 +51,7 @@ var tests = [
   },
 
   function() {
-    observerService.removeObserver(observer, "media-playback");
+    observerService.removeObserver(observer, "audio-playback");
     ok(true, "Observer removed");
     runTest();
   }
diff --git a/dom/base/test/test_audioNotificationStopOnNavigation.html b/dom/base/test/test_audioNotificationStopOnNavigation.html
index 181f84c5c14..5d1db443776 100644
--- a/dom/base/test/test_audioNotificationStopOnNavigation.html
+++ b/dom/base/test/test_audioNotificationStopOnNavigation.html
@@ -19,7 +19,7 @@ var iframe = null;
 
 var observer = {
   observe: function(subject, topic, data) {
-    is(topic, "media-playback", "media-playback received");
+    is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     runTest();
   }
@@ -35,7 +35,7 @@ var tests = [
   },
 
   function() {
-    observerService.addObserver(observer, "media-playback", false);
+    observerService.addObserver(observer, "audio-playback", false);
     ok(true, "Observer set");
     runTest();
   },
@@ -51,7 +51,7 @@ var tests = [
   },
 
   function() {
-    observerService.removeObserver(observer, "media-playback");
+    observerService.removeObserver(observer, "audio-playback");
     ok(true, "Observer removed");
     runTest();
   }
diff --git a/dom/base/test/test_noAudioNotification.html b/dom/base/test/test_noAudioNotification.html
index 6fa19ce7bfb..fdb8487e104 100644
--- a/dom/base/test/test_noAudioNotification.html
+++ b/dom/base/test/test_noAudioNotification.html
@@ -15,7 +15,7 @@ SimpleTest.waitForExplicitFinish();
 
 var observer = {
   observe: function(subject, topic, data) {
-    ok(false, "should not receive media-playback notification!");
+    ok(false, "should not receive audio-playback notification!");
   }
 };
 
@@ -27,7 +27,7 @@ video.loop = true;
 video.src = "noaudio.webm";
 
 video.onplay = video.onpause  = function() {
-  // Yield to the event loop a few times to make sure that media-playback is not dispatched.
+  // Yield to the event loop a few times to make sure that audio-playback is not dispatched.
   SimpleTest.executeSoon(function() {
     SimpleTest.executeSoon(function() {
       SimpleTest.executeSoon(function() {
@@ -43,7 +43,7 @@ var tests = [
   },
 
   function() {
-    observerService.addObserver(observer, "media-playback", false);
+    observerService.addObserver(observer, "audio-playback", false);
     ok(true, "Observer set");
     runTest();
   },
@@ -57,7 +57,7 @@ var tests = [
   },
 
   function() {
-    observerService.removeObserver(observer, "media-playback");
+    observerService.removeObserver(observer, "audio-playback");
     ok(true, "Observer removed");
     runTest();
   }
diff --git a/dom/base/test/test_noAudioNotificationOnMutedElement.html b/dom/base/test/test_noAudioNotificationOnMutedElement.html
index aa6778b60d6..3fc12ed42d8 100644
--- a/dom/base/test/test_noAudioNotificationOnMutedElement.html
+++ b/dom/base/test/test_noAudioNotificationOnMutedElement.html
@@ -18,11 +18,11 @@ var expectedNotification = null;
 var observer = {
   observe: function(subject, topic, data) {
     if (expectedNotification !== null) {
-      is(topic, "media-playback", "media-playback received");
+      is(topic, "audio-playback", "audio-playback received");
       is(data, expectedNotification, "This is the right notification");
       runTest();
     } else {
-      ok(false, "should not receive media-playback notification!");
+      ok(false, "should not receive audio-playback notification!");
     }
   }
 };
@@ -39,7 +39,7 @@ var tests = [
   },
 
   function() {
-    observerService.addObserver(observer, "media-playback", false);
+    observerService.addObserver(observer, "audio-playback", false);
     ok(true, "Observer set");
 
     audio.src = "audio.ogg";
@@ -82,7 +82,7 @@ var tests = [
   function() {
     expectedNotification = null;
     audio.onpause  = function() {
-      // Yield to the event loop a few times to make sure that media-playback is not dispatched.
+      // Yield to the event loop a few times to make sure that audio-playback is not dispatched.
       SimpleTest.executeSoon(function() {
         SimpleTest.executeSoon(function() {
           SimpleTest.executeSoon(function() {
@@ -98,7 +98,7 @@ var tests = [
   function() {
     expectedNotification = null;
     audio.muted = false;
-    // Yield to the event loop a few times to make sure that media-playback is not dispatched.
+    // Yield to the event loop a few times to make sure that audio-playback is not dispatched.
     SimpleTest.executeSoon(function() {
       SimpleTest.executeSoon(function() {
         SimpleTest.executeSoon(function() {
@@ -109,7 +109,7 @@ var tests = [
   },
 
   function() {
-    observerService.removeObserver(observer, "media-playback");
+    observerService.removeObserver(observer, "audio-playback");
     ok(true, "Observer removed");
     runTest();
   }
diff --git a/dom/base/test/test_noAudioNotificationOnMutedOrVolume0Element.html b/dom/base/test/test_noAudioNotificationOnMutedOrVolume0Element.html
index 69a17c063b0..ceda06e287d 100644
--- a/dom/base/test/test_noAudioNotificationOnMutedOrVolume0Element.html
+++ b/dom/base/test/test_noAudioNotificationOnMutedOrVolume0Element.html
@@ -18,11 +18,11 @@ var expectedNotification = null;
 var observer = {
   observe: function(subject, topic, data) {
     if (expectedNotification !== null) {
-      is(topic, "media-playback", "media-playback received");
+      is(topic, "audio-playback", "audio-playback received");
       is(data, expectedNotification, "This is the right notification");
       runTest();
     } else {
-      ok(false, "should not receive media-playback notification!");
+      ok(false, "should not receive audio-playback notification!");
     }
   }
 };
@@ -39,7 +39,7 @@ var tests = [
   },
 
   function() {
-    observerService.addObserver(observer, "media-playback", false);
+    observerService.addObserver(observer, "audio-playback", false);
     ok(true, "Observer set");
 
     audio.src = "audio.ogg";
@@ -61,7 +61,7 @@ var tests = [
   function() {
     expectedNotification = null;
     audio.volume = 0;
-    // Yield to the event loop a few times to make sure that media-playback is not dispatched.
+    // Yield to the event loop a few times to make sure that audio-playback is not dispatched.
     SimpleTest.executeSoon(function() {
       SimpleTest.executeSoon(function() {
         SimpleTest.executeSoon(function() {
@@ -74,7 +74,7 @@ var tests = [
   function() {
     expectedNotification = null;
     audio.muted = false;
-    // Yield to the event loop a few times to make sure that media-playback is not dispatched.
+    // Yield to the event loop a few times to make sure that audio-playback is not dispatched.
     SimpleTest.executeSoon(function() {
       SimpleTest.executeSoon(function() {
         SimpleTest.executeSoon(function() {
@@ -108,7 +108,7 @@ var tests = [
   function() {
     expectedNotification = null;
     audio.volume = 0;
-    // Yield to the event loop a few times to make sure that media-playback is not dispatched.
+    // Yield to the event loop a few times to make sure that audio-playback is not dispatched.
     SimpleTest.executeSoon(function() {
       SimpleTest.executeSoon(function() {
         SimpleTest.executeSoon(function() {
@@ -121,7 +121,7 @@ var tests = [
   function() {
     expectedNotification = null;
     audio.volume = 0.5;
-    // Yield to the event loop a few times to make sure that media-playback is not dispatched.
+    // Yield to the event loop a few times to make sure that audio-playback is not dispatched.
     SimpleTest.executeSoon(function() {
       SimpleTest.executeSoon(function() {
         SimpleTest.executeSoon(function() {
@@ -142,7 +142,7 @@ var tests = [
   },
 
   function() {
-    observerService.removeObserver(observer, "media-playback");
+    observerService.removeObserver(observer, "audio-playback");
     ok(true, "Observer removed");
     runTest();
   }
diff --git a/dom/base/test/test_noAudioNotificationOnVolume0Element.html b/dom/base/test/test_noAudioNotificationOnVolume0Element.html
index c346b985582..fcd798292b0 100644
--- a/dom/base/test/test_noAudioNotificationOnVolume0Element.html
+++ b/dom/base/test/test_noAudioNotificationOnVolume0Element.html
@@ -18,11 +18,11 @@ var expectedNotification = null;
 var observer = {
   observe: function(subject, topic, data) {
     if (expectedNotification !== null) {
-      is(topic, "media-playback", "media-playback received");
+      is(topic, "audio-playback", "audio-playback received");
       is(data, expectedNotification, "This is the right notification");
       runTest();
     } else {
-      ok(false, "should not receive media-playback notification!");
+      ok(false, "should not receive audio-playback notification!");
     }
   }
 };
@@ -39,7 +39,7 @@ var tests = [
   },
 
   function() {
-    observerService.addObserver(observer, "media-playback", false);
+    observerService.addObserver(observer, "audio-playback", false);
     ok(true, "Observer set");
 
     audio.src = "audio.ogg";
@@ -82,7 +82,7 @@ var tests = [
   function() {
     expectedNotification = null;
     audio.onpause  = function() {
-      // Yield to the event loop a few times to make sure that media-playback is not dispatched.
+      // Yield to the event loop a few times to make sure that audio-playback is not dispatched.
       SimpleTest.executeSoon(function() {
         SimpleTest.executeSoon(function() {
           SimpleTest.executeSoon(function() {
@@ -98,7 +98,7 @@ var tests = [
   function() {
     expectedNotification = null;
     audio.volume = 1;
-    // Yield to the event loop a few times to make sure that media-playback is not dispatched.
+    // Yield to the event loop a few times to make sure that audio-playback is not dispatched.
     SimpleTest.executeSoon(function() {
       SimpleTest.executeSoon(function() {
         SimpleTest.executeSoon(function() {
@@ -109,7 +109,7 @@ var tests = [
   },
 
   function() {
-    observerService.removeObserver(observer, "media-playback");
+    observerService.removeObserver(observer, "audio-playback");
     ok(true, "Observer removed");
     runTest();
   }
diff --git a/dom/base/test/test_pluginAudioNotification.html b/dom/base/test/test_pluginAudioNotification.html
index cbc68672b6a..8f26b5e4bb6 100644
--- a/dom/base/test/test_pluginAudioNotification.html
+++ b/dom/base/test/test_pluginAudioNotification.html
@@ -52,7 +52,7 @@ var iframe = null;
 
 var observer = {
   observe: function(subject, topic, data) {
-    is(topic, "media-playback", "media-playback received");
+    is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     SimpleTest.executeSoon(runTest);
   }
@@ -68,7 +68,7 @@ var tests = [
   },
 
   function() {
-    observerService.addObserver(observer, "media-playback", false);
+    observerService.addObserver(observer, "audio-playback", false);
     ok(true, "Observer set");
     runTest();
   },
@@ -93,7 +93,7 @@ var tests = [
   },
 
   function() {
-    observerService.removeObserver(observer, "media-playback");
+    observerService.removeObserver(observer, "audio-playback");
     ok(true, "Observer removed");
     runTest();
   }
diff --git a/dom/base/test/test_webaudioNotification.html b/dom/base/test/test_webaudioNotification.html
index 5197ac8d054..7b767e1c575 100644
--- a/dom/base/test/test_webaudioNotification.html
+++ b/dom/base/test/test_webaudioNotification.html
@@ -19,7 +19,7 @@ var iframe = null;
 
 var observer = {
   observe: function(subject, topic, data) {
-    is(topic, "media-playback", "media-playback received");
+    is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     SimpleTest.executeSoon(runTest);
   }
@@ -39,7 +39,7 @@ var tests = [
   },
 
   function() {
-    observerService.addObserver(observer, "media-playback", false);
+    observerService.addObserver(observer, "audio-playback", false);
     ok(true, "Observer set");
     runTest();
   },
@@ -60,7 +60,7 @@ var tests = [
   },
 
   function() {
-    observerService.removeObserver(observer, "media-playback");
+    observerService.removeObserver(observer, "audio-playback");
     ok(true, "Observer removed");
     runTest();
   }
diff --git a/dom/base/test/test_webaudioNotificationStopOnNavigation.html b/dom/base/test/test_webaudioNotificationStopOnNavigation.html
index 17941cc85e6..9a552a40fc3 100644
--- a/dom/base/test/test_webaudioNotificationStopOnNavigation.html
+++ b/dom/base/test/test_webaudioNotificationStopOnNavigation.html
@@ -19,7 +19,7 @@ var iframe = null;
 
 var observer = {
   observe: function(subject, topic, data) {
-    is(topic, "media-playback", "media-playback received");
+    is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     runTest();
   }
@@ -35,7 +35,7 @@ var tests = [
   },
 
   function() {
-    observerService.addObserver(observer, "media-playback", false);
+    observerService.addObserver(observer, "audio-playback", false);
     ok(true, "Observer set");
     runTest();
   },
@@ -51,7 +51,7 @@ var tests = [
   },
 
   function() {
-    observerService.removeObserver(observer, "media-playback");
+    observerService.removeObserver(observer, "audio-playback");
     ok(true, "Observer removed");
     runTest();
   }
diff --git a/dom/browser-element/BrowserElementChildPreload.js b/dom/browser-element/BrowserElementChildPreload.js
index a40536c9447..4f69f740add 100644
--- a/dom/browser-element/BrowserElementChildPreload.js
+++ b/dom/browser-element/BrowserElementChildPreload.js
@@ -55,7 +55,7 @@ let CERTIFICATE_ERROR_PAGE_PREF = 'security.alternate_certificate_error_page';
 
 const OBSERVED_EVENTS = [
   'xpcom-shutdown',
-  'media-playback',
+  'audio-playback',
   'activity-done',
   'invalid-widget'
 ];
@@ -288,7 +288,7 @@ BrowserElementChild.prototype = {
     // Ignore notifications not about our document.  (Note that |content| /can/
     // be null; see bug 874900.)
 
-    if (topic !== 'activity-done' && topic !== 'media-playback' &&
+    if (topic !== 'activity-done' && topic !== 'audio-playback' &&
         (!content || subject !== content.document)) {
       return;
     }
@@ -298,7 +298,7 @@ BrowserElementChild.prototype = {
       case 'activity-done':
         sendAsyncMsg('activitydone', { success: (data == 'activity-success') });
         break;
-      case 'media-playback':
+      case 'audio-playback':
         if (subject === content) {
           sendAsyncMsg('audioplaybackchange', { _payload_: data });
         }
diff --git a/toolkit/content/browser-content.js b/toolkit/content/browser-content.js
index 03406fc39c3..90420a25df9 100644
--- a/toolkit/content/browser-content.js
+++ b/toolkit/content/browser-content.js
@@ -689,26 +689,26 @@ addMessageListener("WebChannelMessageToContent", function (e) {
   }
 });
 
-let MediaPlaybackListener = {
+let AudioPlaybackListener = {
   QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver]),
 
   init() {
-    Services.obs.addObserver(this, "media-playback", false);
-    addMessageListener("MediaPlaybackMute", this);
+    Services.obs.addObserver(this, "audio-playback", false);
+    addMessageListener("AudioPlaybackMute", this);
     addEventListener("unload", () => {
-      MediaPlaybackListener.uninit();
+      AudioPlaybackListener.uninit();
     });
   },
 
   uninit() {
-    Services.obs.removeObserver(this, "media-playback");
-    removeMessageListener("MediaPlaybackMute", this);
+    Services.obs.removeObserver(this, "audio-playback");
+    removeMessageListener("AudioPlaybackMute", this);
   },
 
   observe(subject, topic, data) {
-    if (topic === "media-playback") {
+    if (topic === "audio-playback") {
       if (subject && subject.top == global.content) {
-        let name = "MediaPlayback:";
+        let name = "AudioPlayback:";
         name += (data === "active") ? "Start" : "Stop";
         sendAsyncMessage(name);
       }
@@ -716,11 +716,11 @@ let MediaPlaybackListener = {
   },
 
   receiveMessage(msg) {
-    if (msg.name == "MediaPlaybackMute") {
+    if (msg.name == "AudioPlaybackMute") {
       let utils = global.content.QueryInterface(Ci.nsIInterfaceRequestor)
                                 .getInterface(Ci.nsIDOMWindowUtils);
       utils.audioMuted = msg.data.type === "mute";
     }
   },
 };
-MediaPlaybackListener.init();
+AudioPlaybackListener.init();
diff --git a/toolkit/content/tests/browser/browser_mediaPlayback.js b/toolkit/content/tests/browser/browser_mediaPlayback.js
index 9b723aafcaf..6e8ed68dcc5 100644
--- a/toolkit/content/tests/browser/browser_mediaPlayback.js
+++ b/toolkit/content/tests/browser/browser_mediaPlayback.js
@@ -10,8 +10,8 @@ function wait_for_event(browser, event) {
 
 function* test_on_browser(url, browser) {
   browser.loadURI(url);
-  yield wait_for_event(browser, "DOMMediaPlaybackStarted");
-  yield wait_for_event(browser, "DOMMediaPlaybackStopped");
+  yield wait_for_event(browser, "DOMAudioPlaybackStarted");
+  yield wait_for_event(browser, "DOMAudioPlaybackStopped");
 }
 
 add_task(function*() {
diff --git a/toolkit/content/tests/browser/browser_mediaPlayback_mute.js b/toolkit/content/tests/browser/browser_mediaPlayback_mute.js
index e0f1b9f660c..311a23b0a63 100644
--- a/toolkit/content/tests/browser/browser_mediaPlayback_mute.js
+++ b/toolkit/content/tests/browser/browser_mediaPlayback_mute.js
@@ -33,7 +33,7 @@ function* test_audio_in_browser() {
 
 function* test_on_browser(url, browser) {
   browser.loadURI(url);
-  yield wait_for_event(browser, "DOMMediaPlaybackStarted");
+  yield wait_for_event(browser, "DOMAudioPlaybackStarted");
 
   var result = yield ContentTask.spawn(browser, null, test_audio_in_browser);
   is(result.computedVolume, 1, "Audio volume is 1");
@@ -43,7 +43,7 @@ function* test_on_browser(url, browser) {
   browser.mute();
   ok(browser.audioMuted, "Audio should be muted now");
 
-  yield wait_for_event(browser, "DOMMediaPlaybackStopped");
+  yield wait_for_event(browser, "DOMAudioPlaybackStopped");
 
   result = yield ContentTask.spawn(browser, null, test_audio_in_browser);
   is(result.computedVolume, 0, "Audio volume is 0 when muted");
@@ -52,7 +52,7 @@ function* test_on_browser(url, browser) {
 
 function* test_visibility(url, browser) {
   browser.loadURI(url);
-  yield wait_for_event(browser, "DOMMediaPlaybackStarted");
+  yield wait_for_event(browser, "DOMAudioPlaybackStarted");
 
   var result = yield ContentTask.spawn(browser, null, test_audio_in_browser);
   is(result.computedVolume, 1, "Audio volume is 1");
@@ -67,7 +67,7 @@ function* test_visibility(url, browser) {
     url: "about:blank",
   }, function() {});
 
-  yield wait_for_event(browser, "DOMMediaPlaybackStopped");
+  yield wait_for_event(browser, "DOMAudioPlaybackStopped");
 
   result = yield ContentTask.spawn(browser, null, test_audio_in_browser);
   is(result.computedVolume, 0, "Audio volume is 0 when muted");
diff --git a/toolkit/content/widgets/browser.xml b/toolkit/content/widgets/browser.xml
index 34c2472140b..6ad1ce56f67 100644
--- a/toolkit/content/widgets/browser.xml
+++ b/toolkit/content/widgets/browser.xml
@@ -663,21 +663,21 @@
          onget="return this.blockedPopups;"
          readonly="true"/>
 
-      <method name="mediaPlaybackStarted">
+      <method name="audioPlaybackStarted">
         <body>
           <![CDATA[
             let event = document.createEvent("Events");
-            event.initEvent("DOMMediaPlaybackStarted", true, true);
+            event.initEvent("DOMAudioPlaybackStarted", true, true);
             this.dispatchEvent(event);
           ]]>
         </body>
       </method>
 
-      <method name="mediaPlaybackStopped">
+      <method name="audioPlaybackStopped">
         <body>
           <![CDATA[
             let event = document.createEvent("Events");
-            event.initEvent("DOMMediaPlaybackStopped", true, true);
+            event.initEvent("DOMAudioPlaybackStopped", true, true);
             this.dispatchEvent(event);
           ]]>
         </body>
@@ -692,7 +692,7 @@
         <body>
           <![CDATA[
             this._audioMuted = true;
-            this.messageManager.sendAsyncMessage("MediaPlaybackMute",
+            this.messageManager.sendAsyncMessage("AudioPlaybackMute",
                                                  {type: "mute"});
           ]]>
         </body>
@@ -702,7 +702,7 @@
         <body>
           <![CDATA[
             this._audioMuted = false;
-            this.messageManager.sendAsyncMessage("MediaPlaybackMute",
+            this.messageManager.sendAsyncMessage("AudioPlaybackMute",
                                                  {type: "unmute"});
           ]]>
         </body>
@@ -858,8 +858,8 @@
             this.messageManager.addMessageListener("PopupBlocking:UpdateBlockedPopups", this);
             this.messageManager.addMessageListener("Autoscroll:Start", this);
             this.messageManager.addMessageListener("Autoscroll:Cancel", this);
-            this.messageManager.addMessageListener("MediaPlayback:Start", this);
-            this.messageManager.addMessageListener("MediaPlayback:Stop", this);
+            this.messageManager.addMessageListener("AudioPlayback:Start", this);
+            this.messageManager.addMessageListener("AudioPlayback:Stop", this);
           }
         ]]>
       </constructor>
@@ -946,11 +946,11 @@
             case "Autoscroll:Cancel":
               this._autoScrollPopup.hidePopup();
               break;
-            case "MediaPlayback:Start":
-              this.mediaPlaybackStarted();
+            case "AudioPlayback:Start":
+              this.audioPlaybackStarted();
               break;
-            case "MediaPlayback:Stop":
-              this.mediaPlaybackStopped();
+            case "AudioPlayback:Stop":
+              this.audioPlaybackStopped();
               break;
           }
         ]]></body>