I'm having a problem with my multi room audio setup. First off, here's how my system is ran.
I've got a SoundBlaster 5.1 Live series soundcard with a 1/8 in. to RCA cable going to an RCA wallplate. The RCA cables run from the plate up through the attic to another RCA wallplate at my entertainment center. The RCA's then run to my Yamaha receiver. From the receiver, I've got the A and B speakers running to volume control knobs in both the bathroom and the back patio, then from there to the speakers(2 ceiling mounted speakers in the bathroom, 2 on the back patio).
When I play the radio through the speakers, sound comes from both speakers like it should. When I try to play music from my computer, it only comes out one speaker. This would lead me to believe it's a problem with either my soundcard or my cables, but I can't figure out which.