I have one nokia n810 internet tablet with OS2008

I installed from the maemo extra repositories mytube 0.1.5-1 with the following dependencies:
python 2.5-gtk2
python-gdata
python2.5-gobject
python 2.5
libffi4
python2.5-numeric
python2.5-osso
python2.5-hildon
python2.5-cairo

I also installed mplayer1.0rc1 with the following dependencies:
libtheora0
libmad0
libogg0

I can get it to run under OS2008, but I can't see anything in the center of the screen. When I click on any of the buttons
surounding, it just shows a blank white screen

am I missing something?