It is possible that you mean my website
klassik-resampled.de
At least is what you described an important part of my project, which contains currently with nearly 120 hours of classical music from 400 years in over 2600 mp3's of which 680 are classical compositions recorded there for the very first time. All music was produced in the last years by myself with samplelibraries:
The only thing which is obviously different. my website is not all interesting 😉
(at least in the eyes of the VSL-guys, who never took any notice of this by far largest resource of serious classical keyboard, vocal, chamber, and orchestral (smphonc aswell as concertant) music created with VSL libraries in nearly every kind of ensemblemusic).
This page gives an overview of all ensemble-recordings of my site:
http://klassik-resampled.de/index.php/ensembles
However if you know anything about other comparable projects I'll be also very interested
best
Steffen.