The mini-episode written by some school kids and shown in Dr. Who Confidential is now on line here:
Click to view
About what you'd expect from a bunch of kids who have been given some guidelines on what they can and can't include, moderately good fun.
I hope that at some point the "the story from River's POV" video they showed in that episode (which re-arranged things to show River's timeline) will be on line, though you can see the whole of Dr. Who Confidential in the BBC iPlayer thingy this week if you're in the UK. It wasn't very good in my opinion, but at least presented events in HER right order.