This is exactly what I needed.
I had spent at least an hour struggling with a small collection of music for which the files contained the track titles, and folder structure was in good shape, but the ID3 tags were a mess. iTunes (I know, I know) was stomping on it, and I wasn’t seeing an easy way out with QuodLibet either. Kid3 had the collection cleaned up in minutes. You rock.
Imported from SourceForge, author: mikeill