One pet peeve I had with the Sonos system was the quality of the UI on high-res screens. While it is, after all, just a remote control, the app was Sonos’ outward-facing experience and needed to be flawless. Now it is.
The company just updated its iPad app to support Retina screens (no similar update for Retina MacBooks, sadly) and you can also change the Sonos’ volume by clicking the volume buttons on the iPad. Both are minor changes, but they are important in creating a smooth and consistent experience.
The new version is available right now. Here’s hoping the desktop app gets the same treatment shortly.