Free Mp3 Wma Converter 1.7.3
Free Mp3 Wma Converter is a small but powerful application designed to help you change the file format of your favorite audio files. 
The program allows you to convert between several well known file formats: MP3, AAC, OGG, WAV, APE and WMA. All the output file formats are customizable (recommended for advanced users): for example for the AAC format you get to choose parameters such as: quality, bitrate (kbits/s), profile, bandwidth, MPEG 2/MPEG 4, temporal noise shaping, etc.
The interface has a nice layout and the program is extremely easy to use. The beginners can use the default settings for encoding their audio file to different formats, so basically they only need to add the selected files for conversion and hit ‘Convert’. The Conversion process is very fast and the program is very stable. As for MP3 formats, there’s an ID3v1 and ID3v2 editing option available.