How do I convert mp4 to mp3 free

How do I convert mp4 to mp3 free

Batch test for Mp3 . Mp4 . FLAC . Ogg . APE . AAC and Wav (PCM 8, 16, 24, 32 bits, DSP, GSM, IMA ADPCM, MS ADPCM, AC3, MP3, MP2, OGG, A-LAW, u-LAW) files; bit converting from mp4 to mp3 view it now How to convert mp4 to mp3 free