A small app I made as in introduction to using C#, made it in less than an hour and it was simple to make while allowing me to get my feet a bit wet with using C#.
 
Could be useful to those maybe wanting to release assets while ensuring you don't get reports of non-48k sounds because people aren't using Porter's patch. 
 
To use simply drag wav/s onto the exe or execute via command line. 
 
Download (click Code tab if you're interested in my potentially cringy code):

github.com