There is no sound in Dreamcast, Mega Drive, NES, SNES, PSX etc…..Does anyone test this before publishing?
In the 31 beta versions, you should select the audio output in emulation station. Did you try this ?
I’ve had the same problem (no sound / choppy sound) on MAME and FBNeo. I solved the issue by selecting the Primary Audio Output in System Settings. I hope it works for you as well.