[siddboots]

This sounds much the same as me, but with beets [1] instead of mp3tag. Not just does your audio-fingerprinting/musicbrainz/tagging, but also maintains a database for you, and has a command line query tool that you can just pipe into another player.

http://beets.radbox.org/

[simba-hiiipower]

wow, that looks really cool; i'll definitely look into it. though it look a bit intimidating to me, seems like it would be a big time saver once you get things setup how you like.