We need to gang up on Mike (HOMEPIN) to make an adaptor for this: http://aussiepinball.com/index.php?topic=10599.0 to suit Gottlieb SYS1, SYS80, SYS80A, SYS80B.
Will be getting one for my EM for fun (once available), but was thinking the 8 inputs (+4 for longer mp3 file) would not be enough for a SYS80