1)   Free Convert WMA to MP3 1.1.0
Free Convert WMA to MP3 is free of charge and professional. It can convert at superfast speed with good output quality. It is really easy-to-use because of the simple interface.

 2)   Newpear Free WMA 2 MP3 Converter Lite 1.5.6
Newpear Free WMA 2 MP3 Converter Lite is a totally free conversion program which can convert your WMA to MP3 format with fast speed and good quality. With a user-friendly interface, it is easy to use for both veterans and beginners.