Alright I'm sure this question has come up many times but I'd appreciate if someone could help me out with my problem.
I have a Sony Bravia DAVHDX576WF I hooked it up to my Samsung HDTV and it played DVD's in surround sound just fine. However I am trying to hook up my Comcast HD box and Xbox 360 with the system and am having some trouble. The comcast technician actually hooked me up with some RCA cables that run from the Sony reciever to the TV, but it sound is only emitted from the two left and right tower speakers, not the center channel or rear speakers. What cables to I need to hook up this system so my Xbox 360 and Comcast play from all speakers.