Well, I cleaned up my wiring yesterday. Aside from the dust I moved around, I threw some unused cables away (junk really). So, things at least look more organized.

I didn't really separate all the power cables so that some utilize a different area of the house wiring unfortunately (I don't think that will be very feasible in my set up).

What did I learn? I learned that the UPS I had hooked up to my Audiotron was making a hummmmmm. Reluctantly, I removed that unit from the mix. Since the Audiotron was the unit that was experiencing the potential power fluctuations, I figure the UPS might be the cause. We'll see! Too bad I'll probably have to wait until next summer when it is 100+ degrees again. At least things are cleaner. I ran the power cables as far away from the speaker wire as possible, so if there was any interference there, that should be reduced. I still have all 8 channels of amplification on one circuit though.