Purchase the app part of the Special Barsoom Bundle.
Download Barsoom from seense website.
Launch Barsoom. Barsoom will then create your personal master key.
Launch the app* part of the Bundle. The app will detect Barsoom master key, and will create your personal license key for Barsoom. Close the app.
*You need to have purchased the app for the app to generate the Barsoom licence key.
Close and Launch Barsoom. Barsoom is now activated.
*This works for the apps purchased either in the seense Store either in the Mac App Store.