On the local pages here you will be able to browse the existing data base with your browser, and have the tunes submitted to you in ABC, Postscript, PNG, or JPEG format for printing, as well as listening to a MIDI file of the tune if you desire.
As far as I know, publishing this material here does not violate any copyrights or wishes of the authors. If you know otherwise please let me know! And, I think it goes without saying, the people who created,edited and published these abc archives deserve a huge thanks for those of us who are able to use these texts to further our own understanding and enjoyment of celtic music.
Contact me at "weltyj (at_sign) yahoo.com" with comments or glowing praise for the interface :-)
There is a brief help page for this archive, what the columns mean, how to try to improve the rendering of the sheet music, etc.
The raw abc files for this archive are here.