I have a Mac G4 and Media 100 8.2.3. Apparently only Quick time 7.0 (or maybe lower) is compatible with 8.2.3. I downloaded Quick time 7.2 and now Media 100 does not work properly. I searched all over the web and at apple.com looking for a way to downgrade back to Quicktime 7.0 (download 7.0). I was unable find a place to download it. Any idea where I can download Quicktime 7.0.?