Hello Chris Moller,
you can check installation files (run.sh/jukebox.ipk) out for more information.
In "preinst" in jukebox.ipk you can find this line:
Code:
ln -s ${MOUNTPOINT}/mp3 /usr/local/music_directory # mpd/Gimmix use the directory "mp3" in root of memory card as music_directory
This should do the trick. I hope this helps you.