There is one in sid. YOu can just download it from:
http://ftp.fr.debian.org/debian/pool/main/m/mt-daapd/mt-daapd_0.9~r1696-1.3+b1_armel.deb
(with wget for example),
and then install it with dpkg. This could solve your problem.
Reply To: Firefly on nslu2 debian lenny (armel)