Two easiest ways are: 1. VLC - (click on link) (choose nearest mirror site) and 2. http://www.gnutellaforums.com/genera...ng-itunes.html (check the link called 'Mac HElp? How I can open zip and wma files on my iMac?')

Personally I'd recommend staying away from WMA files where possible. It's a patent format and has issues with its DRM which allows potentially dangerous URL links or viruses to be included with the file. http://www.gnutellaforums.com/tips-t...wma-files.html