the tool has also options for listing files, automatic big to little endian conversion for wave files, -a option for adding headers to the extracted files for playing them with VLC or vgmstream (fsbext generates the header for all the formats like pcm, ima-adpcm, vag, gcadpcm, xma, mp3, it214, it215 and so on) and even for rebuilding the original FSB archive.
the FSB files are used in a huge number of PC, Xbox, Playstation and Nintendo games so if you have one of these files this is the tool for the job.
the tool works from both command-line and minimalistic GUI on Windows when the exe is double-clicked.
Note: the mp3/delta format used by Fmod is incompatible with the standard players, so from version 0.3.1 fsbext dumps only the first mono/stereo channel or each series of channels if you use the -M option. this behaviour can be disabled with the -m option.