For the purist, "Extras" includes PNG files of the actual wooden or plastic cabinet surrounds. You can run MFME in "cabinet mode" so the game screen is framed by a digital recreation of a Barcrest or JPM cabinet, complete with fake wear and tear.
The layout file creates the graphical user interface, showing the buttons, symbols, and reel strip visuals. Where to find them: MFME -Multi Fruit Machine Emulator- Roms And Extras --