I was rooting around in the basement of the internet last night, trying to find a free copy of a tune in the Skye Collection, and I found this site with about 250 Cape Breton tunes. I don’t think it has been posted here.
http://www4.ncsu.edu/unity/users/p/pfackler/www/Music/
It has both a text file with abc notation and a whacking huge .pdf file with all 250 plus tunes. The .pdf file was taking forever forever over a crappy dial-up connection, so I gave up on it and just found what I was looking for in the abc file and pasted it into the Concertina.net ABC Convert-A-Matic to get jpeg and midi files.
There are a lot of Natalie and Buddy MacMaster tunes transcribed from their recordings.
If this has been posted before, please accept my apologies for the tedious repetition, but I did a search and am pretty sure it hasn’t been.