SoX not found

[SmOrtMoNke]

C:\Users\mpoug\OneDrive\Υπολογιστής\RedditVideoMakerBot-master>python3 main.py 'sox' is not recognized as an internal or external command, operable program or batch file. SoX could not be found!

If you do not have SoX, proceed here:
 - - - http://sox.sourceforge.net/ - - -

If you do (or think that you should) have SoX, double-check your
path variables.