Is there any way I can copy the filenames and tags of a folder of 10 MP3s and "paste" that information on 10 MP4s in a different folder?

I'm about to start upgrading my iTunes library from MP3s to ALAC, and I really would like to streamline the process. I have an old Windows app that will copy the tags, but it won't touch the filenames. I can't use MusicBrainz or anything like that because most of my 20,000+ songs are live Dylan concerts.