Ireland 20,000 Volkslieder, German and other Folksongs - Lyrics of over 150 songs with a few midi sound files.
Irish songs and traditional music - Lyrics of close to 250 songs. There is also a separate listing of midi sound files available.
Cantaria - A library of "bardic" folk songs, mostly from Ireland, Scotland and England. Lyrics, sheet music, sound files in .wav and mp3 formats for many of the songs.
Folk Music of England, Scotland, Ireland, Wales and America - Songs of Ireland - Songs dating back to the 17th century. With midi files.
Spike's Music - Irish - The lyrics and guitar chords of approximately 150 Irish songs.
Enya - Translations and Lyrics - "This is a compilation of translations and corrections of Enya song lyrics. It attempts to give a complete annotated translation of every Enya song, which is not in English. In addition, there are lyrics for songs that are incorrect or absent in album printings." Gaelic and English.
Axel's Irish Folk Home - Music and all the rest! The lyrics of a handfull of Irish songs with a few midi files.