gsferrari, yeah, i am very familiar with digital optical signals and such, i work in the home theater dept at best buy. I had just never heard it referred to as s/pdif before. Yeah, i definitly have a 5.1 capable system, its actually 6.1, but most stuff in in the 5.1 format right now. Anywhoo nice to know though. You know, i should really post more, i find myself reading a lot more than i post, i feel i know all you guys, but i dont post much, so you dont know me.