Although I consider myself technically adept I am having a hard time understanding A/V receivers.

I will be starting out with:
- Two front speakers (no sub, no center, no surround),
- A stereo power amplifier,
- HDTV with 4 HDMI inputs.

My sources will be:
- Squeezebox Touch (RCA stereo audio only),
- Tivo Premiere XL (HDMI),
- XBox360 Slim (HDMI),
- Oppo BDP-83 Blu-Ray (HDMI).

I don't see myself getting any other sources soon, but I will be adding speakers to get 5.1 eventually.

Can I use something without video processing?
What are the advantages of video processing in the receiver over that of the TV?

Since HDMI carries audio, how do I split it out to the receiver? Does it need to be done by the TV? Or do I use the audio-outs from the source to the receiver? How does the TV know not to play the sound from the HDMI? If a source has analog and digital audio outs, which is best to use? How is multichannel audio sent from source to receiver when not using HDMI? How is 5.1 audio "converted" into stereo when only two speakers are present? What if I add just a subwoofer? Aargh.


Axiom M80s + QS8s + VP180 <-- Pioneer VSX-1120-K <-- Squeezebox Touch / XBox360 / Oppo BDP-93