In a fit of stupidity, I managed to delete all the playlists that I have created over the last several years I've been DJing.
And by "delete", I don't mean they're sitting in the recycle bin...they're gone, gone, gone.
I meant to just clean up space.
And something went wrong while I was cleaning, so I wanted iTunes to resynchronize itself. So I deleted the files I thought would force that to happen.
Well, it does need to resynchronize.
Because it's entire library database is GONE.
So are all its library database backups.
On the bright side, I found a disc backup I made in June 2006.
On the dim side, that's still nearly a year and a half of playlists that I'll never get back again. Including every event I've ever DJed with Ravenna.