How do you play videos from the "Videos" app in the background IPod 4G

Hey

I used to have an app which allowed me to play videos from the "Videos" app on my ipod touch 4th gen. But the other day I had to wipe my ipod and can no longer get this app. Is there any other app which imports your videos from the "videos" app or is there a way to play videos in the background using the "videos" app.

Anny help will be greatly appreciated.

Thanks

Karl