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This video shows the Silent Space Mutator in action. It makes the sound behave realisiticly i.e. beeing silent in space due to the lack of air. More videos in my channel: http://www.youtube.com/user/Hiredicespecter More details on this project's work in progress: http://forums.epicgames.com/showthread.php?p=28828742#post28828742 And on ModDB: http://www.moddb.com/games/slot5