Don't feel dumb, it's not obvious at all. The only reason I tried it is because I know most emulators support loading from zip, this is the first I've seen that requires it though. Anybody could have made the same mistake 
I did notice that the sound was pretty atrocious, but I thought that might just be the quality of the system (I'm unfamiliar with it myself). Hopefully this should help with ripping the sprites though?
I did notice that the sound was pretty atrocious, but I thought that might just be the quality of the system (I'm unfamiliar with it myself). Hopefully this should help with ripping the sprites though?