sox: sox 14.4.2 (Audio file converter)  
sox:  
sox: SoX is a cross-platform (Windows, Linux, MacOS X, etc.) command line 
sox: utility that can convert various formats of computer audio files in to 
sox: other formats. It can also apply various effects to these sound files, 
sox: and, as an added bonus, SoX can play and record audio files on most 
sox: platforms.  
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