I have built an MCE PC and want to connect it to a cheapo 5.1 Surround Amp. The sound card I have is a Soundblaster Audigy 2 ZS Platinum which has SPDIF optical and coaxial outputs. I get nothing from the speakers connected to the amp from either optical or coax. I have tried the music player that comes with the sound card as well as Media Player, Real Player etc. but no sound from the digital outputs. I have tested the analogue output on the card and it is fine - I also get sound from the amp with a dvd player on the optical link. Any suggestions gratefully accepted.