I think if you send like a dollar to everyone on your playlist, it would end up being like 100 times more than they get from the system.

Beware that syncthing is a bad backup strategy as it will update to sync the broken file (or even file deletion). I advice to do some other sort of backup. Even a simple shell script that copies selected folders into selected location that you run from time to time is a better one.

Edit1: I’ve looked at my script, I use rsync for that.