This is so amazing I downloaded the Concert for Diana videos for my mom (she asked for them) and QuickTIme wouldn't play them. This would be fine since VLC/MPlayer does, except I needed to make a DVD. Since I use Toast 8 and it requires QuickTIme for the Codecs to convert video/audio, I have been unable until tonight to be able to to convert an avi file with embedded MP3, even with Toast 8 DivX plugin as well as DivX player (Spyware, don't have installed). Perian solves this problem and can now rplay any format that VLC/MPlayer can play (I hope). Thanks developers of Perian, keep up the great work!!!