Video Game Sound Converter
Video Game Sound Converter, or VGSC, is a program that can convert a range of video game audio formats to WAV. The conversion is actually handled by vgmstream, however VGSC wraps it with a simple UI and allows you to convert multiple files quickly and easily. It is occasionally updated with the latest version of vgmstream. It is available for download here (Windows only).
It is made by Puggsoy, a member of the VG Resource.
How to use
With the UI
If you start VGSC by double-clicking on the executable (or through the command-line with no arguments) a file dialog will appear. In here, select the files you wish to convert. A folder dialog will appear, where you choose which folder the converted files will be saved in (this folder must exist beforehand).
With the command-line
VGSC can also be run using the command-line.
VGSC inDir outDir
inDir: Path to directory containing files to convert
outDir: Path to directory where converted files will be saved
Again, outDir must already exist.