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

Atlantic Canada Pipe Band Association
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
The Gaelic Book Council
Bagpipe World Radio
Internet Bagpipe Radio