I have that software, still. It's from early 1957, if I recall.
Actually, it's quite good - and was quite pricey at the time. I've had it working on a PC, although I'm using things like Kontakt and Garritan now.
I wouldn't be holding my breath and it's likely got nothing to do with Reaper but the coding for what was a VST in 2002 - an old timer by today's standards.
P.S. Welcome to the forums.