what is the best converter program of MP4 to MP3?

MP$ is a Video format an MP3 is audio Are you looking for extracting the audio sequesnces from the video sources ??  
 
Didn't Try googling

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a MP4 audio to MP3 audio only for musics  im finding a program to download

There are a few :
1. Media coder : the ultimate, but hard to understand.
 
2.F A E : may be good.
 
3.Video mp3 extractor : video to mp3.

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Here is a tuto for that
http://www.riverpast.com/en/suppor [...] p4/mp3.php

thanks :^^:

 
Hope it helps