A really complete music encyclopedia:
All
Music Guide
The best: Trouser
Press
A philosopher's very rich music
page: Piero Scaruffi
Radio
Paradise: An
interesting online indie radio station
Links to some excellent independent
record companies:
Drag
City
Acuarela
Thrill
Jockey
Southern
Records
Domino
Records
A
very good record shop
Some great musicians
Will
Oldham
Low
Van
Morrison
Tom
Waits 
Miles
Davis
John
Coltrane
Jeff
Buckley
The best music sharing community
SoulSeek
Some interesting music e-journals
Mondo
Sonoro (in Spanish)
Pitchfork
Review
Dusted
And great music venue and night
club
Planta
Baja