When I first covered the 4.5 update for Airfoil, which added extended AirPlay support and remote controls for compatible apps, a reader suggested an interesting hack or, better, workflow for wireless audio in the comments: given Airfoil’s capability of sending audio from a single source to multiple speakers or devices at once, it was possible to send audio from iOS to the Mac using AirServer, and then pass along data from AirServer (which acts as an AirPlay receiver on the Mac) to speakers recognized by Airfoil. Later, another reader chimed in to say that, considering Airfoil’s recent improvements, there was no need to install a separate app — Airfoil Speakers itself could handle the AirPlay stream from iOS to OS X, and then be used as an input source in Airfoil. When combined with an app like Reemote, this setup would allow you to send audio from an iPhone or iPad to the Mac wirelessly, from the Mac to another set of speakers or computers, and then control everything from iOS. (more…)