Fix GitHub issue #1

Changes sending of an empty metadata document (which was wrongly escaped) to sending no metadata at all. The metadata document should not have been escaped at all at this stage, probably leading to double escaping and parsing errors in some renderers.

Author: protyposis

LocalAudioBroadcast/ControlPoint.cs

@@ -176,7 +176,7 @@ public void SetAVTransportURI() {
             UPnPArgument[] args = new UPnPArgument[] {
                 new UPnPArgument("InstanceID", (uint)0),
                 new UPnPArgument("CurrentURI", DirectoryServer.S1),
-                new UPnPArgument("CurrentURIMetaData", "<DIDL-Lite></DIDL-Lite>")
+                new UPnPArgument("CurrentURIMetaData", null)
             };
 
             service.InvokeSync("SetAVTransportURI", args);