There are a lot of free sheet music links at this site; you can read them online or print them out: Free Sheet Music Linksalso, someone just put in a link to this BBC site which shows the music and has a midi to play along with, for some trad. tunes, at a slower than normal speed for those working them up: BBC Virtual Session.
There are a few others I will dig up tomorrow for you.
Welcome to the Mudcat!
kat