I connected my computer to my receiver through a spdif coax connection. They are about 30 feet apart and there is some humming when they are connected on evey receiver output. I am pretty sure it is a ground loop, but have not found any way to correct the problem since I am using a digital coax. I was wondering if any1 has any tips/suggestions. Moving the computer closer so they are on the same ground is not an option.

Thanks!