Music Player Daemon (MPD) is a flexible, powerful, server-side application for playing music. Through plugins and libraries it can play a variety of sound files while being controlled by its network protocol
From MPD Homepage:
To install mpd all your have to do is run ' lin mpd 'as root.
Copy the example config:' cp /usr/share/doc/mpd/doc/mpdconf.example /etc/mpd.conf '
Now edit /etc/mpd.conf with you favorite editor as root.
Now you need to build the database with the following command. ' /usr/bin/mpd --create-db '
Now you can start the service by running this command as root ' /etc/init.d/mpd start '
As long as you edited your config file correctly you should have a working mpd! Now you can install the client!
Additional help can be found at the MPD WIKI