Based on Nick's (nyc_paramedic) idea and with his help I wrote a step-by-step tutorial for the setup of a Linux music server based on an Alix board and MPD. This is even for Linux newbies (like myself). I've been using this server for several months now and it's great !<br />
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You might use some of these informations. Read it in reverse order (it's is a blog).<br />
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http://cheap-silent-usb-linux-music-server.blogspot.com/