I run a Sammy HD850 into a 436XDE, and an optical out from the Sammy into my Marantz AV SR4300. When I play DVD's, a message always comes up for a few seconds saying "HDMI Audio not supported". Can this be turned off ? No doubt its something simple, but when the disc flips layers mid film, it comes up again and is bugging the hell out of me!!!! Help required !