We have checked in the source code but as of the latest checkin, the jmx console stuff is still broken. So, controlling and trouble shooting problems in your environment is a little tough and next to impossible. JMX stuff as well as documentation and installation instructions are coming.
We had planned on getting the source code up in the repo last week but we hit a snag. Because JAmba is really being developed as an application for a company first, we have had to hack things to meet the deadline. So, we have to fix some stuff in the build and packaging to make it stand on it's own and as soon as we do that, the code will be hitting the sourceforge repo.