Here is a useful tip for any of you mac owners. All of the intel macs and I believe even some of the newer G4 laptops have a dual purpose jack combined with the audio out and in. It is both analog and optical. If you get one of
these adapters you can stream uncompressed PCM to your receiver or processor. This solved a lot of issues for me. If you are importing with apple lossless or Aiff then you won't have any loss of fidelity. Throw in a 500gb drive and the mac mini becomes a great music server.