You can play WMAs on your Mac using WMA player software such as mirethMusic. Provided you have downloaded and installed the Windows Media Components for QuickTime by Flip4Mac, you should be able to work with WMA on your Mac, although software for the Mac that supports the WMA format is limited. Of these four codes, the most popular is WMA, the original file format. Windows Media Audio Lossless (WMA Lossless).Although a WMA file originally only contained a WMA, with the introduction of WMA 9, it may now contain a single audio track in one of following codecs: It’s really a container, which, can now contain one of four file formats (codecs). WMA, short for Windows Media Audio, is a Microsoft audio file format that is typically used to store compressed digital audio.