Rogue Amoeba Airfoil
At a Glance
Allows you to broadcast any audio to an Apple AirPort Express
Airfoil brings AirTunes a few significant steps closer to its full potential--it unleashes AirTunes from iTunes and allows you to stream music from your Mac to your AirPort Express from the applications you choose. For this service (and the ease with which it delivers it), Airfoil is a Playlist Pick.
(See our full review via the link below.)--Dan Frakes