I've just pulled the airport express out of the box and am trying to get it set up to play music from iTunes on my MacBook Pro through the speakers in the next room. Airport Utility sees that there is an AirPort Express in the house...goes all the way through the setup including letting me name it and say I only want to use it for AirTunes and therefore join it to my existing wireless network (called Home, used for internet only) and then right at the end says `restarting to finish configuration' and it doesn't come back from that. The APExpress is flashing orange and the setup wizard never says anything except `waiting to restart'. Any help would be great?

[edit] it was an authentication problem...i have this sorted now.