I recently purchased an M-audio revolution 5.1 so that my card would have an spdif output. My reason for doing this is that I wanted my computer to be able to run my computer stereo while 'Simultaneously' sending a signal to my Yamaha reciever in a different room, thus powering two systems from one source (is this even possible?) but when i hook up an 'rca to rca' cable from the spdif out on my soundcard to the digital coaxial in on my reciver, I get no sound from the recievers end. Anyone have any clues or could point me in the right direction?