With Flip4Mac you can play .wma and .wmv files directly in Quicktime. Also you can play windows media files directly within your browser.
Download Flip4Mac WMV 184.108.40.206.dmg
(Mac OS X (Intel))
File size: 24,629,402 bytes, version: 220.127.116.11
Flip4Mac / Windows Media Components for QuickTime was added to MovieCodec.com by Bjarne (09-14-2011).