I've been using iMovie 09 for about 2 years with no major issues. Today I added some new clips, and for some reason I can no longer hear audio in ANY of my "events" in the preview window (or whatever it's called--I'm talking about the box where you look at your clips and decide which parts to add to your project). If I select a section and add it to a project, it plays fine (ie with audio) in the project window, but nada still in the preview window. Anyone know what's going on?