Edit - It turns out only the public key has been found out, so all we can do is encrypt (sign) music to be played on an Airport Express. Bummer

Over at the CocoaDev Wiki, there has been a recent update to the AirTunes encryption scheme entry. It turns out that friend to many, infamous dvd cracker and general magnet to lawsuits Jon Johansen, has cracked the AirTunes encryption key, and has a client available (in C#) that streams songs in ALE format, and then send them to the Airport Express. It should be a short amount of time before a software AirPort express server is written, and I can have my own low cost pair of remote speakers to stream music to (yay!).