[Off-topic] 85gallon:
LOL. My howitzer is dirty too. If I get some nice weather this week I may get out in the backyard and clean it.

No offense to jRi0T68, but don't go optical to receiver from TV and don't do HDMI from your components to TV. Your receiver is capable of switching HDMI and it is unnecessary. And it degrades the signal. It is not necessary and you may end up with audio/video timing problems. In his scenario audio is going to go from your source via HDMI through......screw it. Too much typing to explain that. DON'T do what he said LOL.

You didn't say what cable box. I'm assuming it has HDMI and Optical audio. Also, you didn't say how many or what configuration you have for your Polk Speakers. I am assuming front R &L, center, and rear surround + Sub.. So you will be 5.1.

Here's what I would do in your setup with those assumptions and your equipment.

1st, ditch the Blu-Ray Disk player if it isn't a high-end unit. It is redundant. Use your PS3 for BD playback.

Hook your HDMI from cable box to receiver on HDMI4 and optical from cable box to optical in on AV4. Then hook your PS3 HDMI to HDMI1 and optical from PS3 to AV1. I chose those two inputs because you only have those two optical inputs and you should be able to work it this way without having to reassign any inputs in the receiver. You can swap 1 for 4 in the way of inputs. I put cable on 4 because AV4 is labeled (TV) on your receiver. Just easier to track things.

Also, label both ends of your cables. Itis easier when it turns into a pile of spaghetti. LOL

If you are hell bent on hooking up the Blu-Ray Disk player, then hook HDMI to HDMI 2 or 3. Then use coaxial cable to hook audio to respective A/V input. I know it is called "coaxial" but it is actually a regular RCA cable with shielding. If it is a short run a regular RCA cable should suffice. "Coaxial" is still a digital signal and can carry a 5.1 signal for decoding. It is better than the HDMI audio IMHO. And it is definitely better than L and R analog inputs. But it is still lesser then optical. You don't get RF interferance with optical.

Then hook up an HDMI cable from HDMI OUT on the receiver to your TV HDMI input. You should only have one HDMI cable hooked to your TV and that will carry signal to your TV no matter which source you are using.

I quickly looked at your receiver manual. The above should work without having to reassign inputs which can be a pain.

Without Bluray player you will need:

3 HDMI cables. (1 from cable to rec. 1 from PS 3 to rec., and 1 from rec to TV._

2 optical cables. (1 from cable to rec. and 1 from PS3 to rec.)

If you add the Blu Ray player in the mix, add:

1 HDMI from BD to rec. and one "coaxial" for audio.

Other things you need:

If you have a powered sub, you will need another coaxial cable. That is the only way you can hook a sub to the receiver. And it must be a powered sub. Get a subwoofer coaxial cable if you have a long run to you sub. It is less prone to interference.

Don't forget the banana plugs if you are ordering stuff. Also, leave yourself some extra room when getting your cables.

I hope I didn't forget anything.

If I helped you, find some other posts from me in another forum and thank me. LOL

If my assumptions are wrong, let me know and I will tell you what to do different.

FYI, here is a link to my setup. Though the equipment is in another room.

http://xdaforums.com/showthread.php?t=1703795&highlight=home+theater