The sound in SMS plus sdl is not spot on, and i can't fix this myselve, you probably already noticed that it can't play the "SEGA" sound in start screens (like with sonce 1 GG) either. So you'll have to live with it.
If it are hickups and you checked top and mmcqd keeps poping up to the top you could try the commands
renice 20 `pidof mmcqd?
& remounting /boot with nodiratime and noatime. which has to be done while no programing is running (not even dmenu) and being in /
Okay i'll try this
If it don't work, I will totally live with these minor problems as this emulator is far better than the previous release and it's totally playable.
I just wanted to be sure that the problems didn't came from a bad configuration of my dingoo as anyone seemed to be talking about perfect emulation and that wasn't what i could see on my handheld (most of the time video emulation is perfect, but there is sometimes some littles slowdowns, and the sound has small hickups).
So that was just a report.
The improvement are nevertheless great.