Great find! (Although I could do without all those advertisements.) ZeaLitY, you should archive these, although you should be the one to decide whether or not we should host them here publicly.
One caveat: I looked at a few of these, and they are almost certainly piano arrangements rather than the master scores. To be honest, I'm not even sure how music composition works in the video game world; the master scores may not exist as printed sheet music. Those of you who need every last detail of the Chrono songs, will be disappointed.