Hey, Egon, this is likely to be one of the last posts on this thread, so before it is left to slowly sink out of sight beneath all the awsome new future projects, I would like to request that this thread be made sticky, or that a link to Sound System be added to the 3rd party downloads section (at your discretion, of course).
The reason for this request is that developers who are new to jPCT may also be looking for a 3D sound library to use in their project, and making SoundSystem easy to find could be helpful.
If you choose to put a link in the 3D party downloads section, the following zip file contains all the JAR's, javaDoc, source code, tutorial guide, and example applications. If I make any future updates, tutorials, etc., I will re-zip everything and place it at the same location, so this link will always be correct:
http://www.paulscode.com/downloads/SoundSystem.zip (last updated: 26 November 2008)