I’ve been seeing requests for these classes requested a lot lately. My guess is:
– it wasn’t publicized enough when they were released
– people cannot find them on Macromedia’s site
So, for the former, here is a direct link (again):
Flash Remoting AS2 Classes – ZIP
For the later, I know things are crazy with the merger I’m sure, but please tell those in charge of such things to make them more prominent, either on this page, or even better, a link on the right of the Flash Remoting section at Macromedia’s site.