Ok so it seems like lots of people are having the same problem as me. I have a SB audigy card and am trying to hook it up digitally to my DD5.1 I had it connected via the aux, but would rather have it connected via the coaxial in. I went out and bought an RCA cable and a phono to mini mono adapter at Radioshack. I got home and connected it all only to find out that it didnt work. I swtiched the soundcard to digital output only. Does anyone know how to fix this problem?