When I hit spacebar to pause, I hear about half a second of stuttering, which is a little annoying to my ears.
This is not a big deal, but I think it should be easy to fix. I think it's just the old sound buffer data is being sent to the sound card. Perhaps as soon as the video is paused, the sound buffer should be cleared (zero'd out). That should do the trick.
Windows 7 64-bit, realtek alc888, vlc 1.1.5