Hi Folks! I have some Trouble getting Imame4all at work. I just want to Play MK2.  So, like explained in the Gamelist, i got that mk2r32.zip "Mortal Kombat II (rev L3.2 (European))" Rom and put it into the Mame Rom Folder together with the neogeo.zip. When i start MK2 just the iMame4ll 0.37 Beta Main Menu opens and nothing happens. What am i doing wrong?

Sound in NES Roms is playing way to fast on Raspi 3. Tried all Cores.