MPD won't work until you tell it where the media files are. You do that by changing the etc/mpd.conf file on the Alix.
But first, you have to create some folders (which will be used by mpd) on the desktop computer :
- write "cd /home/your_username/music" and press ENTER
- write "mkdir mpd_music" and press ENTER
- write "mkdir mpd" and press ENTER
- write "cd /mpd" and press ENTER
- write "mkdir playlists" and press ENTER
- write "ssh -2 -p 22 root@192.168.1.30" and press ENTER
- enter the root password of the Alix
- write "remountrw" and press ENTER
- write "jed etc/mpd.conf" and press ENTER
- change the content of this file according to the example text you find in this post.
- save the file with "Ctrl+x+s" and quit jed with "Ctrl+x+c"
- write "/etc/init.d/mpd restart
- write "adduser your_username audio" and press ENTER
- write "remountro" and press ENTER
- write "exit" and press ENTER (you exit the Alix)