[howto] Stream audio to Apple Airtunes in Ubuntu
Now that the raop modules ship with pulseaudio in karmic onwards, this is a relatively easy task to achieve.
$ sudo aptitude install paprefs pulseaudio-module-raop pulseaudio-module-zeroconf $ paprefs
Enable ‘Make discoverable Apple AirTunes sound devices available locally’ http://twitpic.com/pzvok
System --> Preferences --> Sound --> Output
You AirTunes device should now appear here. Select it as your output and then start playing music.