Well, I also noticed strange sound problems several times, but it's not sound device related. It occurs most likely when changing any options, but sometimes even right after starting a game. I think it's caused by pokemonhackers core emulation changes. Since my onboard sound itself has *****ing problems with pausing sounds, I can't tell if I solved your problem, because my sound would still produce *****. But even if I had a better sound card I would still not know enough about the internals and where to search for the mistake. It's quite complicated, you know ^^"