hey denmark40 and tak for din svar (thanks for your answer)
i kinda solved the ordeal myself, after yet some hours of tinkering with it :?
i ended up installing a complete codec pack (ace mega codec pack from
http://ace.subpage.net/ ) and the newest build of bsplayer.
for anyone with the same problem as me that solution worked to solve the problem.
but it created a new problem - playback of all types of media is now more cpu intensive. my tvbox (p2 400 mhz) is not powerfull enough no handle it any more. any suggestions and information are much welcome !
@denmark40: if i install the filter will that make media playback less cpu intensive ?