[Five]

I've been tagging with foobar2000, using a plugin that guesses the values from the .txt file (can't remember the name of that plug right now, but I could dig up a link if anybody's interested). Then I go in and adjust individual tags when there are multiple dates or in the case when the plugin has trouble guessing the venue/date. Then I do some spot checks to make sure everything is kosher.

there's a link in my signature to raindawg's foobar2000 tutorial which works very well without any plugins, too.