I'm a newbie both to the mac world and to the divx/avi realm. I downloaded an avi file but I can't get it to play at all (as in blank screen, no audio, same when I skip forward). I've tried QuickTime, downloading codecs for QuickTime (DivX and 3ivX), VLC, MPlayer and I get the exact same result on all of them (blank window and no sound). What am I doing wrong and how can I fix it? Thanks.