At the end of every animation project, I always need to fill it with some much needed Sound FX and music to breath some life into the project. However, being new to audition I have become painfully aware that Audition will stutter with certain compressed quick times. Which one to use? Well, for me, on a mac I’ve found that Audition plays quite nice with a Quick Time Pro Res 422 Proxy file even at 1080p. Playback is smooth as butter. If you don’t have a video converter to get your file to Pro Res, may I suggest getting it straight from the horses mouth for a measly $49.95 instead of Sorenson’s Squeeze 8 Pro for 16x the price.