Its was six dollars so I decided to get it and was happy at first since my controller worked immediately, however when ever I play anything there is a black screen with only audio. you can only see the game when you put up the emulator menu in game. Is there any fix to this?

EDIT:
Nevermind I just started it again and it fixed itself somehow.

When you Alt-Tab out of the game and then back while playing any of the games, the frontend will "lock" into a black screen. No way around it that I know of, other than terminating the program.

This doesn't happen when Alt-Tabbing in the splash screen or game selection menu, though.