https://github.com/cutandjoin/Cjam/releases/tag/v2210

Cjam is lightweight freeware that can process large numbers of MP3 files without quality loss.

Official site: https://cjmapp.net

Also available on MajorGeeks:

https://www.majorgeeks.com/files/details/cjam.html

There’s also a forum where users can share feedback or scripts:

https://forum.cjmapp.net