A tutorial on running wires through the wall

[Refnoredcard]

I'm putting sound in a house (not mine) and have a problem in one room. The volume control for the room will have to be mounted directly above the light/fan variable control switch, and the speaker wire both down and up will run in close proximity to the AC wiring to the room lights and fan (it's a den with a fan, not a bathroom!). There is 3.75" between the studs, and I'm not going to rip out the portion of the wall up to the ceiling just to tack the speaker wire onto the stud opposite the one with the AC wires. And putting the volume control in another location is not an option.

Should I consider shielding the speaker wires from the attic down to the volume control, say with something like metal braided techflex, and grounding one end of the braid to the AC ground? (Getting shielded wiring is also not an option...already have plenty of 14/2 & 14/4 to use.)

Thanks!