You can get Sourcemap data just by using the api controller. We currently provide a very basic json and kml output of the data from the site.
http://www.sourcemap.org/api/json/confolens/http://www.sourcemap.org/api/kml/confolens/http://www.sourcemap.org/api/carbon/transport/list/methods/
You can create and update Sourcemaps by POSTing to
http://www.sourcemap.org/api/{apikey}/create/http://www.sourcemap.org/api/{apikey}/update/{apikey} is the api key that has been issued to you in your dashboard.
svn checkout https://collaborative.svn.beanstalkapp.com/sourcemap/trunk/
Json files can be stored locally, kml files can be imported into google earth and used in google earth plugin and google map applications.