Corrupt HD Audio Stream

[shish]

I'm using firewire to get HD off my motorola 6200 from Comcast. Comcast, being craptastic as it is, has issues right now with the MPEG audio of HD feeds popping a lot. They claim its not an issue with the box but with the "signals being too high" and it will take a month to diagnose the problem.

In the meantime, the cable box's output pops a lot and the PC handles the audio better but it appears to cause stuttering in Sage. I'm pretty sure its not a hardware performance issue since I can run the video fine in WMP with "TIMESTAMPS NULL" option selected in the NVIDIA decoder debug page. If I leave that on Sage crashes. I assume the stuttering is caused by the video being sync'd to the audio in Sage, is there a way I can disable a/v syncing?