Ok then screwball the answer is to update your copy of media player then to save me a couple of hours work
i have media player 10 on my pc along with media player clasic and VLC player that playes everything i have (except these)
i also have TuneBite that converts video and audio files from 1 format to another and that wont work on these either for some reason
however seeing as its only me with an issue dont worry over redoing them ill work on things my end , or ill wait and see for myself at the next event i could try them on my laptop whcih has Vista on it it and probelry media player 11 as well now i think about it