I use MusicTime and their Music@passport to transcribe tunes and words here and for the SFFMC songpages. (this is the cheapshit version of Encore, that Frank mentioned earlier) Mine ONLY does four voices. Frank's will do up to 64, I think. It comes for both PC and Mac, humsodever, I think they are no longer in business, right crew?
Anyway, let me know if I can help by transcribing some things for you.
Musictime, and I assume some of these other programs, will allow you to take a MIDI (like one you picked up here at DT) and input it as sheet music. When typing the words underneath, the space bar moves you to the next note. Cool, huh?
Blessings,
Barbara