It doesn’t take very many words to stand up for Apple for removing Airfoil Speakers Touch from the App Store for “surreptitiously” implementing AirPlay receiving. Maybe your arguments boil down to: it’s their store and they actually followed their own rules.
I use Airfoil on an iMac to play Rdio over speakers connected to an AirPort Express; it’s the only reason my old AirTunes setup continues to be of any use. But at the intersection of AirPlay closedness and iOS closedness, Apple can operate a service that powerfully defies its users’ changing habits in music consumption. Success! In a way.
Last weekend we got a jambox. They’ve been around for a little while I guess, but it makes AirPlay’s technology seem clunky and outdated, and AirPlay’s opinions about what audio streams it will carry seem positively absurd. Jambox just plays whatever you want, wherever you want. But to be fair, it is not the right box for playing synchronized audio through fixed speakers in every room of your Napa Valley trophy home—That would be Sonos.
The iTunes ecosystem, compared to the rapid evolution outside its gates, is starting to look more like a retirement community. One with death panels.