Comment 5 for bug 70766

Been experiencing this as well along with many. A work-around that has worked wonders for me is to install "alsa-oss" from the repos (sudo apt-get install alsa-oss) and setting the sound sample rate to 48000hz in zsnes (config->sound). Crystal clear sound and no adverse performance. I don't understand exactly why this works as I thought that alsa-oss has to be invoked directly (aoss <cmd> in a terminal) to wrap an app, but it works none the less. I've also read that compiling zsnes with libao enabled will also work, but I have not tested this personally.