SOLVED: Intermittent scratchy sound, persistent across games

[XpanD]

Dev builds are literally in-development builds of the emulator, e.g. testing versions with the very latest changes merged in. They may be unstable or otherwise screwy, but I've found that the latest ones did fix most of my sound issues. You can find them on the Orphis buildbot, just grab the newest version (v0.9.9.1-1503-gc250074 A.K.A. build #1503 at the time of writing this) at the top.