From Harrison’s marketing materials:
The recording software behind the X-Dubber is an open-source, highly scalable program called Ardour. The stable, full-featured Ardour workstation has the capabilities you would expect from a state of the art workstation. By focusing on the specific needs of the post-production community, Harrison has packaged the Ardour workstationinto a robust, streamlined re-recording product that meets the needs ofour world-class customers.
Pretty awesome. Go Team Ardour.