Building A Multi-Room MP3 Server?

Jason Peacock asks: "Say you have a house set up with multi-room sound already (speakers in each room, central multi-zone tuner, control panels in each room) and it's also wired for a computer network. You'd like to add the ability to play different MP3's in each room. First thoughts are to install a server, put a sound card in for each zone, connect these to the zone tuners, then get some software that can play multiple MP3s, outputting them to different sound cards. Or just run multiple instances of an mp3 player, each instance configured for a different sound card. What's the best way to control this using remote terminals (Win2k boxes) in the house? Final challenge: can this be done with Win2k on the MP3 serving box? I'm interested in hearing both solutions (Linux & Windows)." If computers will be running in each zone, why not have an MP3 player on each which can take control of its speakers and play MP3s streamed from the central server (each zone would have its own port). This shouldn't be too difficult to implement and should work with any combination of operating systems that support streaming servers and clients. Anyone else have other solutions?