[Extreme]

I know I'm a bit ignorant but I'm having some problems with the mp3 download thing. I signed up for music match and have been successful in downloading songs, but I can't seem to save them as a mp3. When I burn to my cd they are only burned as .wmv files and are taking up a bunch of space on the disc. I only have about 15 songs and the disc is full. What should I be doing?

Thanks again