In attempting to answer my own question, I found the Recreate M3U addon for MM4. Gonna reinstall MM4 and give it a try.

I have a text file of a few hundred tracks that I would like to import as a playlist.

However, the txt file is not formatted as an M3u. In addition, while all the tracks exist on my hard drive, the names may vary slightly from what's in the txt file.

For example, in my txt file there is an entry: Fleetwood Mac - Dreams (2004 Remaster)
But in my MediaMonkey library, the song is named Dreams, without the (2004 Remaster) bit.

Is there a plugin or something that will try to match the songs and choose the closest result?