the registration page for MUI[/URL] is still active. I tried to register it a year or so back, not because I expected anything, but just because I felt like it was the right thing to do (after using "copies" of the program all through the '90s). Didn't get any response to my payment, but a "thank you" email at least, would've been nice. 
Stunzi is travelling the world with his mountainbike most of the time and blogging about that. He was cycling South-America from spring 2014 to early 2015 and a bit later was off again to Italy for a while. I guess he just had no time to respond.
Stunzi's website:
http://www.alpenzorro.de - quite a freak (in a definitely positive manner)
