how do I play wmv?

Install the free version of Flip4Mac.

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You can download flip4mac from http://www.microsoft.com/en-us/download/details.aspx?id=9442 . Note you may be prompted during the install to buy a version of flip4mac with more features, which you don't need to do for it to work.

Tried Flip4Mac, liked VLC better. Universal Binary, 0.9.10dmg package

When you install Flip4Mac, you are really installing a component that works in the background. You will actually watch your movie in QuickTime Player.

WMV(Windows Media Video) format is Microsoft's proprietary video file format, Apple's Mac OS X system and QuickTime player don't support this format. To play wmv file on Mac, i recommend this powerful tool which can directly play wmv files and also can convert wmv files to mp4, avi and so on.