Hi Jester, the basic answer to your question is Amon disappeared
The releases he did make are in the archive along with the source code for the last version he made (1.04), no one has been able to contact him and I know for certain many have tried.
There is one good peice of news though, another programmer called "Sir Moon" decided to take up the challenge and has been working on a project based on some of the WinZO code, besides the numerous bug fixes for things no one had even noticed yet, many new and improved features have been written in and this project is still "live" so we can expect some release in the future, I made mention of it in this post here.
https://forum.winmxworld.com/index.php?topic=5692.0.htmlI have seen some of the newer test versions of this already and they are impressive