It is a strange time-warp feeling to read this thread that I started a year and a half ago since the guitarist and other singer had to move on.
Here are some links I collected on Welsh music:
SAIN recording company of Wales
click http://www.sain.wales.com/
Welsh Folksongs
click http://www.acronet.net/~robokopp/welsh.html
Abergavenny Music
click http://www.abermusic.demon.co.uk/main.html
Lesley Nelson also has Welsh tunes on the Contemplator
click http://www.contemplator.com/folk.html
alice in montana