The only Application I know of that does what you want is EasyWMA. It's not free but does not cost much. It works perfectally but do remember if the WMA is protected, nothing will convert it. Check Version Tracker, maybe there is something else, but last time I looked it was EasyWMA. You can get a trial and see if you like it. It's $10.
Shop for your Apple, Mac, iPhone and other computer products on Amazon.
We are a participant in the Amazon Services LLC Associates Program, an affiliate program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.