In addition to the session dot org and JC’s ABC’s, are there other ABC sites out there?
djm, before you suggest it, I did do a search and there’s too much mumbo jumbo to sift through.
Don’t be a woos, ya big woos ya.
The Fiddler’s Companion is full of ABCs, plus lots of background on each tune (couple of versions):
http://www.ceolas.org/tunes/fc/
http://www.ibiblio.org/fiddlers/
ABC Transposer:
http://www.8ung.at/abctransposer/
ABCMus program:
http://www.norbeck.nu/abcmus/
O’Neill’s and Allan’s:
http://www.oldmusicproject.com/oneils1.html
Roger Millington’s Whistle pages:
http://www.rogermillington.com/tunetoc/index.html
Go play. 
djm
Thanks dood! 
This is supposed to be a compilation of all the abc’s on the Internet. There are definitely a lot. I’ve never had call to use it, so I don’t really know anything about it.
http://staffweb.cms.gre.ac.uk/~c.walshaw/abc/index/split.html
On this page, if you click on “Click here to get whole index” and then when you get to that page if you click on “The file codes used in the index can be found here.” then you will see what the codes mean. If you notice there is a “Code” column, a “Date” column, and a “From” column. As you look down the “From” column, some of the links listed there do not have info in the “Code” and “Date” columns. Those links are the websites that the abc’s came from. So I guess in theory you could find all the abc websites on the Internet there. But they aren’t just ITM sites, so…
I personally think this is more information than a person can handle.
I have a big list here.
Excellent, thanks a million Craig!