The only work around for that is probably an over clock, but even then it would probably still sound a bit choppy. I haven't over clocked, so maybe some one else who has would shed more light on that.

The sound is choppy because the emulator needs better optimizations, like a recompiler, better memory management etc. Or in simpler words, it needs an update. Until a major update arrives or someone in the pandora forums bring out a super mega cool optimized and open sourced NES emu, there is no way of fixing it.

The irony here is that my ngage classic with ran at 60mhz ran every NES and gbc game at full speed with sound and with zip file support, where as even at 600mhz, the n900 can not . Whats even stranger is that the gba games ran at the same speed on my ngage classic with sound. Dam, I miss that phone .