I normally use my PC when working with Premiere and After Effects on my Mac but I'm currently trying work on my Mac and I can't seem to get anything to playback in Premiere. The files import fine but they won't playback in the timeline or just in the source window. I've even tried mp3s with no success. I've opened up projects that work on my PC and those also do not work. All files work fine in After Effects on the mac. Does anyone have any suggestions for what is causign the problem?