Ah, I see. Ok, if I start in Portait it stays the same size when I rotate the Storm while playing and there is white screen on the right edge. But if I start in Landscape, it starts full screen, but also stays the same size if I rotate while playing, so the edges of the video are cut off while in portrait. Does that make sense?
I don't know if it can be changed on the fly, while playing or not. I realize now that I had never started playing a video podcast in landscape so I never saw it in full screen.