I just bought a Zeppelin Air and love it - but I can't get Airplay set up. I've followed all the instructions exactly, but now I need to go into iTunes and enable "Look for remote speakers connected with Airplay" and I can't find it. I attached a picture where the tick box should be... I'm running iTunes 10.2.1 on Snow Leopard 10.6.6 Could anyone suggest a reason why it isn't there? I'm pretty stumped. Thanks in advance!