you should beable to do this in the player properties. or choosing which type of files you want a certain player to only play.How do you change which media player you would use as a default or as your primary choice to use?
Right click on any media file it will give a option of open with ..
select the player u want to open in default and on ther bottom select the tag :
remeber or
always open wid :
then select ok this wil make that meadia player default for all ur media files!!!!
njoy