I'm in the process of making sure my metadata is correct by running all my music through MusicBrainz Picard (one of the best music data analysers around).
Now that my metadata is looking all neat and tidy, I was about to ask the question if any software exists that RENAMES music from the metadata automatically.
I have too many titles that look like this: 09_Blue_Danube_Waltz.mp3, or worse.
Anyway, I've now answered my own question and found this free software called Tag Scanner. It looks damn good and does a GREAT job. I tested it for viruses etc with Kaspersky, seems to be fine.
The Ultimate TagScanner: Скачать