Update!
So my MAME PC - Windows 7, 64 bit, IE 10 - **flash not installed**
SWF wouldn't load in IE. Just failed flat out. So I went ahead and downloaded and installed the newest version of Adobe Flash 11 (directly from Adobe) and now it works fine.
The pre-compiled EXE version I "made" appears to be Flash 10, so I'm wondering if that has something to do with it (it failed before and after flash installations on my MAME PC).
Can you guys confirm what version of Flash you have installed?
EDIT:
http://www.adobe.com/support/flashplayer/downloads.htmlOffline, Stand alone flash player, version 11 - officail from Adobe. If that won't play the files for you, I don't know what will. It works on the command line too (flashplayer swf file). Chain it with a program called "qres.exe" and you can get it sudo-fullscreen. Add in an autohotkey script and you can make it all automated and cabinet friendly.
Thats a lot of work though.