If you want to run 5.1 analog audio (the 6 cables) you can run the video any way you want. I run both my HD DVD player and Blu-Ray players with 6 channel analog and HDMI for video. HDMI is your first choice, use that for the Oppo and PS3. Depending on the output of your PC and how many HDMI inputs the receiver has you may need something like a DVI to HDMI cable for the PC. If you have the 360 Elite and another HDMI port, hook that up with HDMI also, otherwise just use component video.