InstallSox - essa/7m GitHub Wiki

What for

SevenMinutes requires sox for mobile clients to create partial contents and reduced bit rate mp3.

Install Homebrew

I thiks the easiest way to intall sox is installing it by Hombrew.

So, install Homebrew from http://mxcl.github.io/homebrew/

Install sox

$ brew install lame
$ brew install sox

osx snow leopard - Why isn't sox able to convert to mp3? - Super User