diff -r d45095c2f4f3 -r bee149131e4b mpx/playbackframework/playbackserver/src/mpxplaybackserversession.cpp
--- a/mpx/playbackframework/playbackserver/src/mpxplaybackserversession.cpp	Tue Feb 02 00:27:58 2010 +0200
+++ b/mpx/playbackframework/playbackserver/src/mpxplaybackserversession.cpp	Fri Feb 19 23:18:32 2010 +0200
@@ -515,6 +515,13 @@
             break;
             }
 #endif // SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
+        case EPbsSetPrimaryClient:
+            {
+            TInt error = iPlayer->ClientList()->SetPrimaryClient(*iMessageQueue);
+            TPckgC<TInt> handle(error);
+            aMessage.Write(0, handle);            
+            break;
+            }
         default:
             {
             PanicClient(aMessage,KErrNotSupported);