Slipstream lets you stream audio from any application to the AirPort Express

Rogue Amoeba Software is coming out with a new application called Slipstream that'll let you kick AirTunes to the curb and stream audio from most any application, rather than just iTunes, to your AirPort Express. There was some noise a few months back that superhacker DVD Jon had supposedly
broken the encryption Apple uses to send audio to the AirPort Express, but we're guessing that Rogue Amoeba must have figured out some other way to stream audio to the AirPort Express that doesn't involve any code cracking. At least not if they want to stay in business—though Apple shouldn't fret, this'll only help them move more of the AirPort Express.

[Via The Unofficial Apple Weblog]