I see the gofundme webpage was closed.
No harm done, since I believe this was an unrealistic pipe dream to begin with.
Because besides me (and other forum members) being critical about the way this was approached and explained on the forum (e.g. using +10 year old dead posts to make a case, and not properly explaining what happens to other forum member's money), what is probably more interesting: I have serious doubts about the technicalities behind what the OP was expecting and asking for.
It looks like it would require the plugin to (amongst many other things) be able to analyse audio files and decide reliably which ones are musically identical.
While that is probably going to be possible in the future (considering the exponential development of AI algorithms), I am not aware of any current software, regardless its price that is able to do that in a completely reliable matter.
Let alone there being a sole developer willing and able to construct something like this specifically for MusicBee for a couple of bucks.
If it happens, it happens. But hopefully in the same spirit as the last
10 (godammit, 14) years of MusicBee.
Everybody here has been contributing without having the thought of money on his/her mind.
It would be nice if it could be kept that way for a little while longer.