Fix stuttering video audio on iTunes under Windows 8

I just bought an HD movie on iTunes, and much to my chagrin, I wasn’t able to watch it. The video was OK, but the audio was out of sync, and constantly stuttering.

Here’s the solution:

  1. Control Panel -> Sound
  2. Right click the speakers you’re using, hit “properties”.
  3. Click the “advanced” tab.
  4. Choose “24-bit 44100Hz”

Mine was set to 19200Hz, and that was the problem!

For reference – I have a Xonar DX. The PCM setting in the Xonar application didn’t make a difference – it had to be changed in windows, as per above.