Converting MPEG-4 to MP3

Instructions for Fedora Linux.
Install lame:
> yum install lame

Install FAAD.
You need to compile it. Instructions are in the README.linux file in the source package.

Then you can use this command:
> faad -o - "file.m4a" | lame - "file.mp3"

References

1. Lame, http://lame.sourceforge.net/
2. FAAD, http://sourceforge.net/projects/faac/