On Windows,...

Download the sox-14.3.0-win32.zip file and then extract it somewhere.  You can even put it right under  "C:\\Program Files\\."  It will create a subfolder with all the files in it.

Then you just need to use the full path to the sox.exe file:

"c:\\Program Files\\sox-14.3.0\\sox.exe" --help

Oh, you need to run it from a command prompt--this is not a GUI app.  If you just double-click on it, it will just flash the help info and disappear.

Hope that helps.  If it\'s a Mac, I have no idea, but it\'s supposed to be Easy.