It could not handle the latest audio and video codecs and streaming videos resulted in substantial buffer times. Windows Media Player for Mac was always somewhat technologically behind compared to other media players for Mac like Quicktime. It has been replaced by Flip4Mac which is the Microsoft officially endorsed Windows Media Player for Macs. While the PC version is now onto 11, Windows Media Player for Mac stopped on version 9 and has now been abandoned. This is why versions of Microsoft products on Mac are usually way behind their PC counterpart. It's no secret that the Mac platform has never been Microsoft's priority. Please download Flip4Mac for the new official Windows Media Player for Mac. The review here is only for reference and there is no download link. Important Note: In 2006, Windows Media Player for Mac was replaced by Flip4Mac featuring Flip Player which is the new Microsoft endorsed official Windows Media Player for Mac.