przemo3336
You wont see the option for the Mame 0139 and 078Plus Libretro cores (any chance it could be added devs/Atari?,also for FBNeo core,Model 3 etc 😊)
You would have to use Libretro Mame or Mame stand alone emu options.
Once you have one of those selected scroll down to COIN SOUND PLUGIN and select enabled.