The release notes contain version history.
this project is based on the PRODMX processing library from Andres Colubri, some DMX lanbox code from the guys at imal and some UDP code part of the Processing Libraries project, for the Atelier Hypermedia, art from Aix-en-Provence.
The first release of the file can be downloaded at https://github.com/downloads/hdavid/dmxP512/dmxP512.zip.
Unzip and put the extracted dmxP512 folder into the libraries folder of your processing sketches. One basic example is included in the dmxP512 folder.
Source is contained in the download and is available at https://github.com/hdavid/dmxP512
feel free to contact me for any suggestions and bug reports.