http://www.online-convert.com/result/f29f91d941f0eeccb96d5a5a9a1d771f

http://online-audio-converter.com/

http://media.io/progress.jsp;jsessionid=C597EACE7F986D044C229BC7C2EF132E

WMA -> WAV (web) -->AMR---> WAV (128k bit 16bit sample size mono 8k rate PCM) 

WMA -> WAV (128k bit 16bit sample size mono 8k rate PCM) ->NCH -->RaW -->wav