USF file extension - Nintendo Ultra 64 sound format
What is usf file? How to open usf files?
File type specification:
The USF file extension is also used for an audio format used on Nintendo Ultra 64 consoles.
USF is a file format which contains all the data needed to play a song from an N64 game. Once the song has been ripped into a USF file you can load it up in a player and listen to the music.