I searched around on this forum along with apple's support website and I can't seem to find anyone else with this problem. I have a Macbook Pro 2008 (last one before the upgrade). If I play a DVD or quicktime video or even a movie on iTunes it won't play audio. I can adjust the volume of the laptop and I can hear the audible clicks for the volume change but just no sound from the video. If I reload the video (meaning inserting the DVD or reloading the page to rewatch the video) the sound starts working. Any idea what could be causing this and how to fix it? Thanks!