I recently purchased a Sonos Play:5 and immediately started wanting to push audio from video sources to it. I don't have a monitor yet (waiting for BF) so I purchased an AirPort Express and connected it to the line input on the Play:5 (and configured it according to the Sonos documentation). When I tried to switch the audio on my rMBP to the Sonos, I found the audio from any video source to be delayed by 2-3 seconds. What was weird is a few days later on a whim I pushed a YouTube video from my iPhone to the Play:5 and noticed there was hardly any delay. I then tried my iPad and so far the only time I'm seeing that 2-3 second delay is from my rMBP. Usually I'm playing videos from Hulu or the CBS website. I've tested on both Safari and Chrome. Any ideas on how to resolve the audio delay from the rMBP?