Hmmm. At the moment that I checked, http://www.bd-fans.com/RnD.html
was offline, so I found it on archive.org.
Then I tried to download from archive.org all 222 files linked from the main page; and successfully acquired 188 of them.
Only then did one of my attempts to reach the original site succeed. So then I tried to download the 34 files which were not found on archive.org; but unfortunately, the apparent reason that archive.org doesn't have them is that bd-fans.com also doesn't have them! I did a spot-check on a file or two which were
on archive.org, and they were also present on bd-fans.com.
The 34 that I failed to download were as follows. (Note: some of these are of only tiny historical interest, like builds for OS/2 and PocketPC; and some others are readily acquired elsewhere, including artsoft.org; yet finally, there also appear to be a couple dozen which might be unique and therefore currently 'lost'. I marked with '(*)' some items below which I'm pretty sure are in 'standard' locations like artsoft.org or even, indeed, in the basic RnD downloadable packages). See the archive.org and/or bd-fans.com pages for readable descriptions: