Scenario Chess was programmed by Henry H. and uses many free graphics, music, sound effects, and other resources. The full list of credits is available as a downloadable text file here.
Scenario Chess Demo Video Credits:
The music, "Treasures of Ancient Dungeon", was made by Alexandr Zhelanov, http://soundcloud.com/alexandr-zhelanov, licensed under the Creative Commons Attribution 3.0 License (http://creativecommons.org/licenses/by/3.0/), and edited by Henry H.
For a full list of graphics, sound effects, and other resources used in the video, see the Scenario Chess Credits text file.