There are basically two ways to get the sources:

1. Log in as anonymous, go to the 'timeline', and select the version you want and pick 'ZIP'. This will download a ZIP file of that particular check-in.
2. Get a user account (ask Ron for one). Get Fossil on your machine. Use Fossil to get the source tree. You can also clone without using a user-name, but you will be unable to push changes here unless you have a proper user account.