Free chiptune soundfont in SF2 format (featuring the 8-bit audio samples from most of my old games)
A bunch of music with an emphasis on ambient tracks.
A bunch of music with focus on common level themes and with alternate variants for some songs.
A pack with fire, snow and underwater versions of every song. Perfect for a Banjo clone.
A bunch of chiptunes.
Another bunch of chiptunes, unrelated to the first bunch.
A large amount of sound effects.