There are so many movies coming round in junk emails these days that you may be happy you cant’ play WMV files. But just in case you do need to actually look at one, here’s how.
There is a simple movie player called VLC that will download all kinds of movies, even ones that Quicktime can’t play. It’s not as good looking as Quicktime Player, but it can play Windows WMV files. You can download the latest version of VLC from here. Install it into your Applications folder, and then whenever you need to play a WMV movie, just right click (or control-click) on the movie and select ‘Open With’ – ‘VLC’