I have a Linux box in my living room with a huge hard drive, storing most of my recently-downloaded FLAC sets. I'd like to setup playback through my Denon AVR-1603 receiver (about 8 years old) on the other side of the room (about 13-15 feet), in the most cost-effective way possible. I don't really want to buy a piece of hardware that will tap into the network. I'm guessing I can't get an optical cable to run that far (and I don't even have an optical out on the computer at the moment). If I went 1/8" > RCA and ran that, how would that sound? Or is that too far a run for that kind of cable?