Skytopia: Hundreds of individual SNES tunes examined and classed, with mini-reviews and trivia of the best. Music judged according to rhythm, melody, intricacy and general orchestration.
SNES Music Box: Contains 75 hand-picked essential SPC files.
The Blue Bomber's Multimedia: Various files for the Super Nintendo.
Voidaudio.net: Over 11000 SPCs and other audio formats.
Zophar's Domain: SPC Archive: Over 18,000 Super Nintendo files.