What is sure is that they include the key. From [0]:
> The other major feature in Airfoil Speakers is the new Enhanced Audio Receiving option. With an inexpensive in-app purchase, your iOS device becomes a full-fledged mobile AirPlay receiver!
This is only possible with the leaked AirPort ROM private key. As soon as I saw the title on HN I thought that was the most likely cause of the removal. Occam's razor and all. Including the Apple private key in Airfoil Speakers Touch was, if not stupid, at least a very bold move from Rogue Amoeba.
Assuming RA included this key and they probably suspect this is the reason but it stands to reason that they can still play dumb and say they haven't been told why the app was yanked.
note: followed lloeki's link above into the comments and there's this from RA's Paul Kefasis (italics mine)...
"There should be no legal issues here whatsoever.
Airfoil Speakers on the Mac and PC has had this receiving functionality for years now, and now it’s on the iOS platform as well. Airfoil Speakers is a clean-room implementation of the AirPlay protocol. Further, as you note, Apple approved the app after review. So, we don’t anticipate any issues here."
It's not a matter of playing dumb. It would be foolish to simply assume that the rejection is due to a particular thing when Apple doesn't say what it is. They haven't been told, that's the truth, and why would they say anything else?
