It seems that there are editions of Windows 10 that don't include Windows Media Player by default (!?), but you can download it from:
https://www.microsoft.com/en-us/download/details.aspx?id=48231

This might mean that those versions of Win 10 don't have some required tools to deal with wma files. Are you able to play any wma file on your computer?

Edit: Before downloading anything from that link (and since I'm just speculating), perhaps you could verify if Windows Media Player is installed on your computer, and whether you can play standard wma files.

Please let us know.


Last edited by Andrew - PG Music; 01/21/16 02:17 PM. Reason: clarification
Andrew
PG Music Inc.