Professor Obo's latest content on the web is at BuddhaDust.Net. The latest "version controlled" update is found in github.
buddhadust---.zip contains most content and images. Optional audios, e-pub, pdf, zip can be downloaded separately, expanded and added to the /resources/ directory (found in the main buddhadust---.zip archive).
The git repository, which contains all HTML and resources (except large audio, e-pub, pdf, and zip archives, linked above) is publicly hosted on GitHub:
git clone https://github.com/alexgenaud/buddhadust.git