I didn't do it, sox did.
Ya, Arryn, I think I got it figured. Make a text file and put in it:
sox -c 2.0 falso6.sw falso6.wav
Rename the .txt extension to .bat and double-click it (keep the text file open in notepad or whatever). Play the resulting falso6.wav. Sounds too fast? Lower the -c #.
1.0 is the default, which, as Argithoth pointed out, makes it too slow. So somewhere in there you should find the correct value. ( -c sets "speed").