Snazzy title here

I am not sure if such a program exists, but I'll describe what I'm hoping for and see if any of you know of such a thing.
I have a desktop box, running Linux, with lots of music on it (about 17GB or so I've ripped off my CDs). This desktop has a nice set of speakers attached to it, and so I like to use it as a music server/stereo. I would like to be able to control the music playback using iTunes on my laptop, as well as using a controller on my desktop (I'm ok with the desktop controller being something like a commandline thing).
The simplest thing I can think of is basically turning iTunes into an mpd client. I'm not sure if that's been done already, or if its really hard to do.
And if a mpd client interface isn't possible, then I'm open to other suggestions on how to get my music listed into iTunes, but the actual playback occurs on my "server" end, so the actual music still comes out of my desktop speakers rather than the laptop speakers.
Let me know if you know of any way this might be done.

Now playing: Jim Brickman - Blessings