Hi, new to the forum but not forums in general and hoping I can get some help. I just bought a 55" LG LED and an LG blu-ray home theater (surround sound) system (model BH4120S ). TV has all the hookups you can imagine. Problem is the surround sound only has an hdmi out, an analog sound not specified as in or out (red/white), and an analog video out (yellow). I'm almost positive that I'm going to need some sort of adaptive hardware to get my cable box to through the surround sound (since the surround sound receiver does not have an optical input). Can someone help me figure out how to get the cable box sound to play through the surround sound? I assume I'm going to have to use the analog sound on the surround sound in some way but I'm not sure how. Thanks alot in advance.