How to delete Frodo libary?

I had done some custom movie sets and such in Eden with XWMM, and when I updated to Frodo they didn't stick.
XWMM is not working with Frodo yet.. so I thought I would wipe my library database and let it sort stuff from scratch till I can get something that will edit my sets again.

But I can't seem to figure out how to delete the database. It used to be NFO files now it's not..

What file(s) do I need to remove so that the library can be rebuilt properly?