...input. Look in the upper left corner of the back of the unit under 'digital'. AFAIK you could connect one digital optical cable from your HD-DVR and the other from the PS3. One of those could instead be connected to the reciver via a digital coaxial cable (where it says 'Dvd in Coaxial' in back of the Sony). Wii shouldn't matter since it does not output dolby digital/dts/surround sound AFAIK. You could try Dolby Pro Logic II if it's available on this particular Sony. Drawback of not having HDMI input is you miss out on the nice new wideband codecs accessible to you via the BD player.
hope that helps,
I have just purchased a second hand Sony Receiver (STR-K6800P) and I am having trouble setting up my Playstation 3 to play surrond sound. Also involved is my Sylvania 32" HDTV, (LC321SS9) A Time Warner HD-DVR cable box and a Wii Game Console. I have been able to get everything to play in surround sound except the Playstation 3. There isn't an HDMI outlet on the receiver. There isnt an Optical Digital Input on the HDTV and I am not willing to switch the Playstation 3 to analog cables. (HD would be gone) If anyone can explain how to get this working so I can experience Bluray and PS3 Games in Surround Sound I would worship the ground you walk upon!! LOL I am literally starting to obsess over this. HELP!