Game Music Box plays video game music files. It works with Mac OS X and Mac OS 9. Still fairly new; please report any problems.

Game Music Box 0.5.2b2.sit or .zip (200K download)

It supports playlists, RAR, ZIP, and GZIP compression, batch recording to sound files, and uses an efficient band-limited engine for good sound quality and low processor load.

Super Nintendo	SPC
Nintendo Entertainment System with Namco, VRC6, and FME-7 sound	NSFE NSF
Nintendo Game Boy	GBS
Sega Master System	VGM
Sega Genesis/Mega Drive	VGM GYM

If you have problems, try the older Game Music Box 0.5.1b2.sit. Also, please link to this page rather than directly to the files, so I can move them in case I run out of bandwidth. Thanks!