mpd is fixed in my repo.. I have uploaded my own copy of mpd and ran

apt-get install gmpc mpd

And it automatically grabbed mine since I raised the version number.. it installs and sets up fine.. it gives a warning when it generates the tag_cache but thats expected. No errors.

It points to /var/lib/mpd/music and /var/lib/mpd/playlists for your music.. I personally change these to /home/user/music and /home/user/music/playlists (i believe this was in Johns beta3).. but I left the mpd package as default as possible and just added whats necesary to work with our sound.