hello this is prolly a stupid question i have a h/k avr630 that i am going to be hooking up on wednesday when my speakers arrive. im trying to make sure i have all my cables needed to hook up just a cable box and a dvd player. im kinda confused on how i am going to get audio thru my reciever for watching cable tv. there isnt a coaxial hookup for a rg6 cable wire on the back of my reciever. so how is my reciever going to be getting the audio from just plain cable tv? thanks in advance for any answers.