Why not just close those request threads when the new version comes online, Joe, with the link intact to the proper thread? That way, whooever psoted it will still be able to find it, but will have to go to the other thread in order to find the info and to post any more about that song.
Along with the threads Pat mentions are a bunch of Paltalk ones which could probably be deleted, too, except for the early ones where we were in the habit of posting the names of the songs we did. I would leave the HearMe ones intact. Juts a thought, but then maybe some wouldn't want the records of who showed up from which continents, etc. deleted. Just a thought.