I've looked but I can't seem to find an NSF with the boss DMC sounds.
I'd be happy with good digital samples (in WAV/MP3) as well.
You can thank tepples for his handy dandy DPCM ripper. I'm not sure if the playback rate is correct, though, it sounds fine to me...
Order in PRG-ROM is Hurt, Monster 1, Monster 2, and then Door.
Monster 1:
http://www.mediafire.com/?7se510nkoj4tdxd
Monster 2:
http://www.mediafire.com/?vbzgy3wy9m4b46v