I've downloaded 3 digital copies so far and none of them are playing properly. Just a black video, no sound no nothing even in quicktime player but you can select chapters in itunes. Length and file size are what they should be. This is especially frustrating to me because I am using snow leopard and i have a new macbook pro 13inch so i don't see why they shouldn't be working. I have Perian installed if that makes a difference but I haven't uninstalled it yet just in case i don't have to. Any suggestions or help would be much appreciated!