There's a download link there at the bottom of the github page. It's not extensively tested so all feedback (and contributions to the code) are welcome.
Basically it's just a simple app you can drag & drop files to and it automatically converts them and places them under a folder in the same directory where the original file was. Please let me know if it works (or doesn't work) for you.
It's using code from pyrocksmith and it wraps everything to single executable so it should be easy to use. No command line etc. needed.
Rocksmith Tools Launcher for Mac
in Rocksmith Custom Tool Kit (ARCHIVE)
Posted
Thank you stranger, it worked like a charm!