It seems as though the MusicBee Wiki is significantly outdated (at least everything I look up there seems to be). But that is not really the subject of this question - just noting that I have tried to research the information and not been too successful. I am actually contemplating starting to update the Wiki for the things I know, but that, too, is not the subject at hand.
What I have found in the Wiki, and in several other references to patches, updates, etc., all says that the MB installation files are in the Windows "c:\Program Files" folder, but on ALL of my computers where I have installed MB (all running Windows 10, 64 bit), the files are located in the "Program Files (x86)" folder. This difference in expected location would seem to be a significant variation since the (x86) folder is specifically for 32-bit programs installed on 64-bit versions of Windows. All of my installations have been done with the full downloads from this site, along with updates from the Latest Versions forum.
So what are the real facts? Is this just a problem of poor and/or outdated documentation, or are there actually two versions of MB floating around (32-bit and 64-bit)?