Hi -- I recently installed a Samsung 5.1ch Bluray surround sound system and I have the patented issue of having only the front two speakers work when not playing a disc from the machine. I've seen a lot of solutions say I need to set the surround mode to Dolby or similar things. However, I'm not seeing anything choosable like that in the settings menu. Does anyone know where in the Bluray system this setting is able to be changed? Thanks