Andrew: Airfoil is the sending portion of the equation - there's definitely no way to send audio FROM the PS3 out to other outputs, nor will there likely ever be.

Airfoil Speakers is the receiving end. This we're considering porting to the PS3 in the future, so that the PS3 can receive audio the same way an AppleTV, AirPort Express or other Mac, Windows, or Linux box does.

Rob: No, djay's pre-cueing is not currently supported. We'll see what happens in the future, but this requires special-casing for djay.