i appologize if this is the wrong area for this. but here goes. i have a comcast hd dvr box that is capable of recieving 5.1 sound. apparently it would take an orange coaxil cable (something like this? http://www.bestbuy.com/site/olspage....=1093467328387 ) i looked behind my sony home theater system and it only has one coaxil imput that is already taken by the dvd player. how would i go with this, listening to tv with the speakers is fine, but sometimes there is hissing every once in a while (especially on Nip/Tuck) thanks for the help.