I have the Slim Devices SB III and Apples AIrport Express (which would require the type of interface you desire... my preference as well)
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wa/RSLID?mco=7D88DA55&nplm=M9470LL%2FA
Check the above link, it will work with PC as well as MAC, and do just what you want.
You will need a mini toslink to toslink cable, the ony one I know if is in the Monster kit, though I am sure others exist. This puts it all in your hands fo ~$200.
BTW You will have to set the AE up as a client of your current network.... this is the one device Apple didn't do a great job packaging.
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wa/RSLID?mco=7D88DA55&nplm=M9470LL%2FA
Check the above link, it will work with PC as well as MAC, and do just what you want.
You will need a mini toslink to toslink cable, the ony one I know if is in the Monster kit, though I am sure others exist. This puts it all in your hands fo ~$200.
BTW You will have to set the AE up as a client of your current network.... this is the one device Apple didn't do a great job packaging.