WMV Playback on MAC

There are many options for what to use to play WMV files on OS X. The first of these is Flip4Mac which is a plugin for Quicktime. With Windows Media® Components for QuickTime, by Flip4Mac™, you can play Windows Media files (.wma and .wmv) directly in QuickTime Player and view Windows Media content on the Internet using a Web browser. Here are 2 links
Link #1
Link #2
cellent option is VLC player for MAC (this is my favourite media player):

Get VLC

Finally. there is Windows Media Player 9 for Mac. Why you would use this is beyond me but it is an option.
Get Windows Media Player For Mac