http://www.macnn.com/articles/01/12/14/klangfarben.freeware/
Klangfarben freeware player, tools available
updated 08:55 am EST, Fri December 14, 2001
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Sonoluca has released its real-time animation software Klangfarben as a freeware "Public Player" version. The powerful realtime audio/video animation toolbox has a custom visual interface that can be used to manipulate movie and image files in realtime as well as compose filters, use an external video-in source via QuickTime components, use automatic beat-matching functonality, design network games, and render high resolution movies.
