John Chambers' Jigs
This directory and its subdirectories contain the abc source for numerous jigs from lots of different areas and styles.
You should be able to feed these files to abc2ps, abc2mtex, or abcmidi, and have them work.
If you have problems, send me mail.
I've been experimenting with a few tools to do useful things in directories full of .abc tune files:
[Session directory] -
Session lister -
Tune lister -
These are "works in progress" that I've included here to get ideas for making them more useful.