The MCGManager is an application that allows you to manage songs on all the compatible CAVS Karaoke players. It extracts CD+G discs to hard disks, but if you have a USB flash storage then it will work as well.
Typically, a USB flash drive is seen as a hard disk. However, you should download and test the application itself since it's already available for installation.
I've also installed it on Windows 10 and it works without issues, therefore it should work on previous versions of Windows as well.