1)   ImTOO WMA MP3 Converter 2.144
WMA MP3 Converter is a Audio Video files to mp3 / WMA converter software which can convert WMA to MP3, convert AAC to MP3 and convert MP3 to WMA. This conversion tool is not only a WMA MP3 converter but supports converting video or audio file format.
WMA MP3 Converter, WMA to MP3, MP3 to WMA, OGG to MP3, M4A to MP3, AAC to MP3, OGG to WMA, M4A to WMA, AAC to WMA, VQF to MP3,

 2)   GoMe M4A to MP3 Converter 1.5
GoMe M4A to MP3 Converter is a M4A, AAC/AAC+ format converter for Windows. Convert audio files from M4A(mpeg-4 audio),AAC(Advanced Audio Coding) formats to MP3, WAV or WMA files. This audio converter is easy to use.
m4a to mp3, aac to mp3, m4a to wma, m4a to wav, aac to wma, aac to wav,

 3)   OJOsoft M4A Converter 1.5.3.0218
It can convert M4A files to MP3, MP2, WMA, OGG, MP4(audio only), AAC, AC3, WAV. This converter not only converts M4A files to audio formats , but also supports converting video and audio files to M4A, AAC, MP4(audio only).
M4A Converter, Video to M4A Converter, Audio to M4A Converter, M4A to MP3, MP3 to M4A, M4A to WMA, FLAC to M4A, M4A to WAV, M4A to AAC, M4A to AC3,