I'm using iMovie to add some simple titles to a video. Seemed like a reasonable thing to do. But, when I hint the movie with Quicktime Pro or iMovie, upload it to an Xserve and watch the resulting video stream, the audio has lots of loud pops which makes it impossible to listen to. If I don't use iMovie, I do not get these pops from the same video source. It's quite frustrating. Does anyone know: - what's causing these audio defects? I've tried different "share" settings. - what I can use instead of iMovie (for free) to add titles?