diff --git a/apps/system/js/app_window.js b/apps/system/js/app_window.js
index 40273e52af32..33373f9b4d7b 100644
--- a/apps/system/js/app_window.js
+++ b/apps/system/js/app_window.js
@@ -765,8 +765,10 @@
       this.browserContainer.appendChild(this.browser.element);
       this.iframe = this.browser.element;
       this.launchTime = Date.now();
+      // Register audio channels for new browser frame.
+      this._unregisterAudioChannels();
+      this._registerAudioChannels();
     }
-
     this.browser.element.src = url;
   };
 
@@ -851,16 +853,7 @@
         }
       }
 
-      // Register audio channels.
-      this.audioChannels = new Map();
-      var audioChannels = this.browser.element.allowedAudioChannels;
-      audioChannels && audioChannels.forEach((audioChannel) => {
-        this.audioChannels.set(
-          audioChannel.name,
-          new AudioChannelController(this, audioChannel)
-        );
-        this.debug('Registered ' + audioChannel.name + ' audio channel');
-      });
+      this._registerAudioChannels();
 
       if (this.isInputMethod) {
         return;
@@ -896,17 +889,35 @@
         this[componentName] = null;
       }
 
+      this._unregisterAudioChannels();
+
+      if (this.appChrome) {
+        this.appChrome.destroy();
+        this.appChrome = null;
+      }
+    };
+
+  AppWindow.prototype._registerAudioChannels =
+    function aw_registerAudioChannels() {
+      this.audioChannels = new Map();
+      var audioChannels = this.browser.element.allowedAudioChannels;
+      audioChannels && audioChannels.forEach((audioChannel) => {
+        this.audioChannels.set(
+          audioChannel.name,
+          new AudioChannelController(this, audioChannel)
+        );
+        this.debug('Registered ' + audioChannel.name + ' audio channel');
+      });
+    };
+
+  AppWindow.prototype._unregisterAudioChannels =
+    function aw_unregisterAudioChannels() {
       if (this.audioChannels) {
         this.audioChannels.forEach(function(audioChannel) {
           audioChannel.destroy();
         });
         this.audioChannels = null;
       }
-
-      if (this.appChrome) {
-        this.appChrome.destroy();
-        this.appChrome = null;
-      }
     };
 
   AppWindow.prototype._handle__localized = function aw__handle__localized() {