Have you tried these?http://bgr.ee/LINKS/l_240.html
http://bgr.ee/LINKS/l_250.html
http://bgr.ee/LINKS/l_250.html#lyr
http://www.runet.edu/~bluegrass/songlnk.html
http://www.accessone.com/~rwadams/h/
http://hot.virtual-pc.com/guitar/frames10.htm
http://www.greene.net/~jack/country/jack13.html
http://www.flash.net/~djka/countrymidi.html
http://www.banjo.com/BG/BG-Midi.html
http://www.aisp.net/country.htm
http://www.yahoo.com/Entertainment/Music/Computer_Generated/MIDI/
http://www.epix.net/~lesley/folk.html
http://www.jg.org/folk/info/artists.html
http://www.yahoo.com/Entertainment/Music/Artists/By_Genre/Folk/