Free WMA to MP3 Specifications
Convert WMA files to MP3 format.
Free WMA to MP3 is a fine converter, if all you need is to change over your WMA files. Sadly, most people will want a converter with more format support, and those aren't terribly difficult to find. This app does make up for that obvious lack of support with quality performance, though.
Convert MP4 files to MP3 format.
Convert M4A files to MP3 format.
Convert your MP4 files to WMV format.