I have an HR20 and have it hooked up to a Samsung HPT-5064 plasma via an HDMI cable. I also have an optical audio cable going to my surround sound receiver from the HR20 but when I put the source on DTV on the receiver I get no sound. The HR20 manual says that you can do this even if you are running HDMI straight to the TV from the HR20. Anyone have this problem, or have any solutions? Thanks.