> Regarding the first part of my question, do you know how I am to "Extract it over > official MAME source" as stated at the bottom of this page? > > http://mame32fx.altervista.org/download.htm
That instruction is only for the source code. You don't need the source code. The source code is only used for compiling your own exe file, which you aren't doing. So ignore that part.
Just download the link for: 0.157 (64-bit)
Run the exe and extract it to somewhere like C:\mame\
Then put your ROM zip file into the "roms" folder and give it a try.