Here are some of my favorite links for Gaelic music and culture:

Atlantic Canada Pipe Band Association
pipes|drums
LonePiper.Net
RTE Radio Ceolnet
Suaicheantas na Colaiste
Sabhal Mòr Ostaig
The College of Piping
The Bagpipe in Nova Scotia
The School of Scottish Studies
Gaelic Dictionaries Online
http://www.smo.uhi.ac.uk/beurla/
The Gaelic Book Council
Bagpipe World Radio
Internet Bagpipe Radio