Ardour is a multichannel hard disk recorder (HDR) and digital audio workstation (DAW). It can be used to control, record, edit and run and complex audio setups. Fro more information see the description of the ardour-gtk package or . . ardour-session-exchange is a Python program, that allows collaboration over the internet. An Ardour session is shared by many collaborators and being worked on by all of them. You can fetch snapshots saved by others and compare them with your work.