Did you try an internet search? I found a version of "Bruach na Carraige Báine" among other lyrics at Druidstone
For readers who aren't familiar with the song or with the Altan recording, there's a WAV sound clip at theAltan web pages Other recordings of the song include Clannad ("Fuaim") and Diarmuid Ò Suilleabháin ("Brucah na Carraige...)