ahh try uninstallers like Revo Uninstaller to uninstall it ... it might work
if u want to play it through windows media player .. right click on song (or any mp3 file )then click properties then click change then select windows media player from the list .. this should definitely work ....
do the same thing for video file also
nd also try looking for total video player files in program files directory
i think it will be in c:\Program Files\Total Video Converter
if u hav installed in C drive