hi Brian,
There are many converters available.. I myself just recenly learned how to help someone else on this site do it. I used
Cdex Have a look at that link if you want to give it a go. All you have to do is
Open it after its installed.
Click the Convert button located near the top.
Choose 'Re encode compressed Audio files' then browse to your .wma files. It will encode them to .mp3 by default.
It will save the new copy in C:\My Documents\My Music\MP3 by default when its finished...