How to copy db/tag info from one file to another

[dtsig]

I have some files, which tagged by an earlier pc of sw, at times goes out of sync (video/audio). When i run into a file like this I re-rip the dvd with diff sw which works quite well. But my wonder is, if all the db info is against file a.avi, i am pretty sure simply changing the filename to a.mp4 okays the db but how to easily tag the files. I have looked but don't see what I believe will be the obvious. What is the best way to replay, say a.avi with a.mp4 with db and file tags (including artwork) updated?

Thanks

[nohitter151]

Advanced duplicate find and fix

[dtsig]

Thanks .. looks like that will do the trick