I bought my kids each a Vizio tablet for Christmas and they're really enjoying them, but one thing I can't figure out is how to use digital copies of movies on the tablet. What I'm talking about is the digital copies that come with some dvds. They state that all you have to do is upload them to your computer and then you can transfer them to your device. I've done this with a couple of different movies and get an error message each time and the movie won't play. The only movie files I've been able to play on their tablets are those downloaded from torrents, but those of course aren't the best quality, and they also aren't something I want to be deal with, quite honestly. Is there something I'm doing wrong?