It's here! Bowers & Wilkins' Zeppelin Air ($599) is the first all-in-one speaker with AirPlay wireless technology to actually hit the market, and though it's just as expensive as the original Zeppelin, there's a lot more value inside for the dollar. Most notably, the oblong spheroid-shaped Zeppelin Air is capable of performing wirelessly streamed music from iTunes and iOS 4.2 or later-equipped iPads, iPhone 3GS/4 models, and iPod touch 2G/3G/4G…
