Yes, I'm running the demo too. It's all I've been able to find.

The server itself doesn't stop serving after 10 minutes, it just drops the connection. All you need to do is re-connect on your client.

You can write an AppleScript that mounts the share, dismount's it at 9 minutes, 55 seconds, then wait 10 seconds, then remount it and repeats.

You can find the Classic Rumpus at the following link:

http://ftp.maxum.com/DownloadPackages/RumpusClassic.sit