Hi, I have two PC's both using MP 11, M-audio 5.1 Rev sound cards and connected via the Digital out to an AV amp. I don't have any other speakers so all audio has to go via Spdif. Both PCs play DVDs correctly, I am using WinDVD 5, but only one of the PC's will output CD audio to the amp, I just get silence from the other. I have tried comparing the setup of MP 11 on both but I can't see any obvious differences, it's in its confused: default config. Any ideas please? 
