Video and music from shared folder as well from local files on UPnP server are played without any special problems. The problem exists if you try to play an internet video (like free tv) stream. For video upto now i see only traffic flow and no image or sound. At the present time audio (like free internet radio) stream works well.
My configuration: system - Ubuntu, sharring program - Samba, UPnP server - Mediatomb, video stream generated from VLC.
