Switch to side-by-side view

--- a/GUI/mainw/mainw.ui
+++ b/GUI/mainw/mainw.ui
@@ -124,7 +124,8 @@
     <property name="title">
      <string>File</string>
     </property>
-    <addaction name="actionChange_Media_Renderer"/>
+    <addaction name="actionSelect_Media_Renderer"/>
+    <addaction name="actionSelect_OH_Source"/>
     <addaction name="separator"/>
     <addaction name="actionSave_Playlist"/>
     <addaction name="actionLoad_Playlist"/>
@@ -222,9 +223,14 @@
     <string>Small Playlist Items</string>
    </property>
   </action>
-  <action name="actionChange_Media_Renderer">
-   <property name="text">
-    <string>Change Media Renderer</string>
+  <action name="actionSelect_Media_Renderer">
+   <property name="text">
+    <string>Select Media Renderer</string>
+   </property>
+  </action>
+  <action name="actionSelect_OH_Source">
+   <property name="text">
+    <string>Select Source</string>
    </property>
   </action>
   <action name="action_viewSearchPanel">