Generally the idea with SongKong is you modify the rules and then re-apply them to your whole collection, but if you just want to apply a new filenaming schema there is no need to rematch everything.
Do we allow this by just new option, or a whole new button.
Also, would be useful for the following workflow:
Match Songs With SongKong
Review matches to check happy with results
Rename now now happy with results (ensures we dont lose metadata contained in folder/filename) that is lost if renamed to other file
But then most users don't want to review the reports anyway, and Undo lets us change stuff back anyway.