RTM!!! There's others around also for doing the same thing. Here's some references to others: Accidental deletion of my library - Gnutella Forums, & also this PC Inspector File Recovery (click on link)

DELETING FILES FROM LIMEWIRE LIBRARY-DON"T! - File recovery advice! - Gnutella Forums

* Edit: Restoration - Free software downloads and reviews - CNET Download.com seems to be better than pc inspector!

Another free one is ASEUS Deleted File Recovery ___ Recuva - File Recovery sounds like a good free one too.