Aye; I did some digging through the archives over a couple of days this week, and there's a lot of stuff that seems like it's not linked to posts. There is, however, a decent amount of stuff still readily available- at least 500 or so songs by my estimate, probably more- so that's something.
Unfortunately, there's a lot of stuff that's just straight up gone because users linked to it via alternative means. I went scouring for older work of mine I'd lost access too, but I tended to link to an old YouTube account I no longer have or long-dead Zippyshare links. A shame, but hey, if nothing else it teaches a potent "keep backups of and take better care of your work" (a lesson past me could've done with learning sooner
Still, I can't complain too much; there were a few songs I'd wanted to find that were still around, and I wound up discovering a few neat things I missed the first time around. It's also always really cool to hear how other musicians made use of Music 2000's features (or other programs in the series) in contrast to how I do, or the little stylistic differences between artists and how they manifest in the various software's features. Seeing what users used in addition to Music software was also pretty cool too; Weapons Division did some neat stuff using hardware synths/effect racks, on one song they did at least.