GA-965P-DS4, like the heading says, built-in sound chip makes random faint crackling noises, akin to static electricity, when playing back DVDs or on-demand Internet TV. What's particularly odd is that these noises persist even when playing back through an external DAC, connected via the optical S/PDIF output. They would thus appear to originate in the digital domain. Same DVD played in my DVD player sounds fine. Is anyone else having this problem? Any idea what causes this? Any solution or workaround? Might a discrete sound card cure this?