Also, all those tracks with previously un-editable tags -- now editable. So, sudo is no longer required to do a make in $HOME. Perhaps using sudo for that in the first place created some of the problems, so in future, I'll check permissions first!
*I've been advised (thanks, Mamarok!) that 777 is a bad idea, since it gives permission to any and all. chown -R username folder/ is better.