I have a 5.1 channel Panasonic Home Theater System set up in our college dorm room. We had some difficulty hooking it up, the dvd source sound works, but when we try to directly link it into the tv for cable channels, we do not receive the surround sound. We're thinking that this could possibly be because this is mono cable, rather than digital cable. It's simply a coax cable hookup from the wall. Do you have any advice on correcting this problem or are we simply out of luck? We would like to have this corrected by the Super Bowl, so your swift response would be appreciated.