SoX on OS X - JoFrhwld/FAVE GitHub Wiki
Downloading SoX
You can find binaries and installers for SoX on its sourceforge downloads page
The current version the last time this page was updated was 14.4.1.
Download sox-14.4.1-macosx.zip from the Sourceforge page, unzip it, and put the unzipped folder somewhere where it'll stay permanently (like /Applications).
Adding SoX to your path
In the Terminal application, go to your home directory and list all of the files in it.
cd ~
ls -a
Look towards the top of the list for a file called .bash_profile. [1]
If there isn't one, you can create it by typing
touch .bash_profile
Open the file:
open .bash_profile
Add the following line to the end of the file.
export PATH=$PATH:/Applications/sox-14.4.1
If you put the SoX folder in a directory other than /Applications, change this line accordingly.
Save and close .bash_profile
[1] Note: You may instead find a .bash_login file. If you already have a .bash_login but NOT a .bash_profile, you can add the sox path to .bash_login instead. However, if in future you create a .bash_profile it will take precedence, so anything in .bash_login will be ignored. For this reason you should probably just use .bash_profile.
Checking for success
Close and reopen the Terminal window. Type in
which sox
The Terminal should print back
Applications/sox-14.4.1/sox