This is the downloadable version of the VorbisGain Shell Add-on originally posted in this thread.
By using the downloadable version you won't have to copy+paste anything, all files are already made pre-compiled and ready for usage.
Note:
You'll need a utility to unpack .rar archives such as WinRAR (commercial software), UnRAR for Windows (freeware, command line program), 7-Zip (free open-source), or TugZip (freeware).