If you’re a Mac user, here’s a plugin for Quicktime that you’re going have to grab.  Flip4Mac has developed a way for you to watch Windows Media files (.wma and .wmv) right from your Quicktime window. 

I know from my years as a tech director, I was constantly installing Windows Media player for people who recieved movies through email or downloaded them off the web.  This one is a must to add to your school’s  basic image.  Go ahead and grab it here!