I'm going to setup my own home theater and I just want to make sure I have everything correct. I have a PS3, Projector, and a surround sound system. I'm going to hook up my PS3 to my projector via HDMI cable, then will I also be hooking up my PS3 to my surround sound? I read it would be better to buy an optical cable to do this because I will have 5.1 instead of 2.0 with the AV cables? Could I hook my surround sound to my projector with an HDMI cable (have 2 ports on projector) or does it have to be the PS3 or is it just a matter of whatever cable turns out to be cheaper and it's my choice? Any help would be great thanks for your time.