Four Horsemen was made of several video captures from the flight simulator IL2 Sturmovik, Forgotten Battles.
		Fraps 1.9 was used to capture the video clips.
			Audacity was used to capture sound from the flight sim.  It was also used to edit the music and sound effects.
			The video clips and sound files were edited together in Windows Movie Maker 2.  After the desired edit was acheived, WMM2 was used to create the final film that can be downloaded on the previous page.
				Except for the flight sim software, all tools listed above were free.