I did that for a while, but all the tools seem to have been unmaintained for the last decade. The command line ones still work, but the GUIs to make them easy still depend on qt3 or other such obsolete things. (streaming servers like jellyfin do this on the fly easy, but other workflows for offline use don't work anymore even though they are still sometimes useful)
Most people weite scripts with said tools which can keep going for a long time. I have a couple laying in my library directory to add replay gain metadata, convert to aac, and backup.
