I have a folder of MP3s, some of which date back to 1999, just a few years after the format was popularised. Most of them have utterly terrible names (think RIDEONAM.MP3). I think at this point they might even survive the heat death of the universe. And they’ll still be terribly-organised.
In addition to autorenaming Picard can also auto organize into folders. So any time I buy new music, I run it through Picard to ensure metadata is correct, grab lyrics, and put it in the right folder that is then picked up by my self hosted navidrome
Picard is literally the only Jellyfin related tool I use that isn’t fully automated, because somehow the automated versions I could find were doing things like renaming files on a 60% confidence of the filename and I had to nuke and re download my library.
So instead I open Picard, click 6 whole buttons, and my entire library/new files are renamed, tagged, and sorted 100% accurately.