My local A/V company just finished wiring the house I'm building. I noticed that they have bundled the speaker cables with the video cables (DVI, component, S-vid) which run to my projector-- and the entire bundle is run through singular holes in the two-by-fours. I was shocked that they didn't separate speaker cables from video interconnects, to avoid interference. But the company claims this is standard installation, and since the lines are all "low voltage" I should not be concerned. Any thoughts?