VGMPlay MSXUSBSlot mod. The mod of VGMPlay. MSXUSBSlot is H/W that connects MSX cartridge to PC via USB. Currently, only Windows is supported. Contact [email protected] Compile VGMPlay under Windows Using MS Visual Studio 6.0: Open VGMPlay.dsw. Build the project. Done. Using later versions of MS Visual Studio: Open VGMPlay.vcxproj. Build the project. Done.