I recently upgraded to latest version of GroovyMAME and CRT drivers, and of course HyperSpin broke. This time around I discovered how to fix the video issues on Windows 7 64-bit and posting it here for prosperity.

- Edit: C:\Windows\SysWOW64\Macromed\Flash\mms.cfg
- Add the following line: DisableHardwareAcceleration=1
MP4 playback will be fixed. Also, on my system, Shutdown stopped working. I replaced the build in shutdown command with "shutdown.exe /s /f /t 0"
I'd love to get off this compiled flash application, but I still did not find anything as simple, works with 15khz displays, and strong with the eye candy.