At the time of this edition, JAULA project is being held at SourceForge and you can access it by following the link http://sourceforge.net/projects/jaula/.
Although my recommendation is to navigate through the project to check for releases available, bugs fixed, notes and further documentation, if you want to start right now, project release downloadables are available at http://sourceforge.net/project/showfiles.php?group_id=193555.
If you are interested in accesing "live" source in order to get latest patches (and no warranties about how it works), development subversion repository is available at https://jaula.svn.sourceforge.net/svnroot/jaula. See the subversion repository section for configuring the sources for your environment.