Well, just an update:

I checked out Malcolm's advice first, put when I clicked on the File pull-down menu, there was no listing for preferences or anything to associate or reassociate, which was a little argh!-ish. So I disabled RealDownload's "Browser watch", and that disabled RealDownload completely -- and fixed the problem.

I'll just have to remember to re-enable it when I want to download a midi from the DT...

I, too, am interested in Mary's freecell strategies -- but I think that deserves a seperate BS thread...