NOTE: I was recommended (in another online forum) to post in these forums. I'm not sure which one is the correct one, so I'm cross-posting it. Hope ya don't mind too much.

What's everyone's advice?

I'm looking to include an in-line audio VC (volume control). But, the best location would be right next to the light switches (some with dimmers) and that would mean the audio cable run would have to be placed near and mostly in parallel to the electrical lines for about 6+ feet (2-ways) into and out of the VC.

Here are some ideas on what to do:
-- buy conduit for either the electrical runs or the audio run where they are in close proximity/parallel to cancel/limit the EMI/RFI issues. Concerns: (a) does it work? (b) which one should I run thru the conduit? audio or electrical?
-- buy a run of shielded in-wall audio cable, and hope it cancels this areas' EMI/RFI issues. Concerns: (a) too expensive to buy for all the wiring I'm wanting to do. (b) Is it available somewhere (online, big box, etc.) for this one run? (c) won't it have to be grounded back at the source hub? And if so... How do I do that with a standard HT audio faceplate?
-- buy all (or just a run of) twisted-pair in-wall audio cable, and hope it cancels this areas' EMI/RFI issues. Concerns: (a) does it work? (b) value per cost if I buy enough for the entire wiring job. (c) Is it available somewhere (online, big box, etc.) for this one run?

In the other forum, the responder says he's even seen the A/V running copper pipe for this situation.

Thanks!

It's not perfect but it works. I would use it on the audio cables. Use steel conduit or maybe pipe. It should be magnetic. Run a ground wire.
Note: In live theater's with 3 phase spot-light dimmers conduit may not help much.