It's probably best to install the apps from the old site now and back them up in a safe place.

I will try to find a solution since some people are still using older versions, but I can't promise I'll find one. part of the problem with old versions is that downloads would become very big for each klik'ed app since there are a lot of outdated libraries. One possibility would be to use a snapshot of debian that is as old as the Knoppix CD, but this means that you get old versions of the software. You can get this behavior by adding the undocumented suffix @2004-02-09 to any klik link.

Greetings,
probono