If you're looking for software to create and maintain a copy of your #music files in other formats, be it for storage on #portable devices, #format #compatibility or #streaming, then you might be interested in that piece of #software I wrote :
https://framagit.org/atom/AtOM
It's #GPL, and should run on #Linux (tested on Debian Bookworm and Trixie), #MacOSX (looking for testers), and #WSL (looking for testers).