Just got my Nexus 7, and I'm finding that when I go to the Google Play Video app, there's a tab for "personal videos." When I navigate to it, I see "NO VIDEOS FOUND" and "You can copy videos from your computer using a USB cable." Ok, fine. I connect to my PC and see the folder structure. The thing is, regardless of where I stick an MP4 or M4V (H.264), it never shows up in the Google Play Video app. I have to go to a third-party. Anybody know where these files are supposed to live? Or am I doing something wrong? Documentation for personal video files is a little thin... Thanks!