So I bought the new Airport Express for AirPlay use. I've set up a 2.4 ghz and 5 ghz network. I use the 2.4 ghz for iPhones and such and the 5 ghz for my MBP. Only problem is that the sound is stuttering and sometimes freezing when I use Airplay through iTunes on my MBP over the 5 ghz network. However, when I switch to the 2.4 ghz network there's no lag... Anyone else experiencing this and have any idea why it's stuttering when using the 5 ghz network - which should be much faster than the 2.4 ghz? I occasionally have similar stuttering issues with my iPhone 4 and 4S when using airplay even though the iphone is about 2 feet away from my airport express. It's starting to bug me that I can't use Airplay in a sensible way... Btw, it's a MBPr with Mountain Lion up to date.