Keynote on iPad plays some videos twice

Hi all,

I am trying to prepare a presentation using Keynote for iPad, I have converted my videos to MP4, and transfered them to my iPad using iPhoto.

I can acess the videos using iPhoto, they play perfectly.

I can veiw the preveiw on Keynote, again, the videos play perfectly,

However, when I come to playing them in the presentation, the video loops, the first run plays perfectly, but the second run (which I dont need!) plays without sound.

Also, if i try to advance to the next slide while this is happening, Keynote crashes and returns me to the home screen!.

This is last thing i need in the middle of a presentation!

Can any Keynote Gurus help me!