Sorry, this is not possible. Not using the preview box we use in all the templates. The web version of the windows media player can not be dynamically removed from the page, if you do try this, it will result in a browser-crash.
WMA could only work if you spawn a new player for every file, this idea has been abandoned for a long time aswell because it consumes a very high amount of CPU and RAM on the client-side. This aswell will result in a browser-crash if you have a lot of WMA files in one folder.