VGMTrans - a tool to convert proprietary, sequenced videogame music to industry-standard formats
VGMTrans converts music files used in console video games into standard MIDI and soundfont files. It also plays these files in-program. It supports a variety of formats from PS1, PS2, SNES, NDS and more.
The tool is currently available on a variety of platforms (Linux, *BSD, Windows, macOS). The latest development version can be downloaded here. These are recommended as stable releases are not frequent and you might miss out on usability improvements and bug fixes.
Older (but not necessarily stabler) can be found on GitHub Releases.