In a study we are currently developing, we wish to include a video clip as a form of mood induction. For some reason, I can't seem to get MediaLab to play my video clip. When the experiment gets to this portion, a small white box pops up and no picture and no sound follows. (By the way, the video clips are saved in .wmv files... but I have also tried saving them as .avi files. Neither seem to work.) The rest of the experiment works fine. We just bought new computers in the lab and they all run on Windows Vista- could this be the problem? The only reason this comes to mind is because I can get MediaLab to play the video clips just fine on my laptop which runs on Windows XP. Anyway, any help would be greatly appreciated.