Help Native Honeycomb player not fullscreen?

[Steinbocken]

I have recently gotten my first android tablet, samsung galaxy tab 10.1 16gb wifi, wohoo! However I got a minor irritating problem.

So when I am using the native honeycomb player for movie playbacks it plays the files alright but some of the movies does not go fullscreen but only uses perhaps a tenth of the screen.

I find this very irritating and I have no clue how to fix it if it can be fixed, Anyone has an answer to this?

Thanks alot for all potential help