KNOW WHAT'S AWESOME?[GEEK EDITION]

Apple's recent-ish update of iTunes which lets you stream music to more than one set of Airport Express-connected speakers. I've now got the same music playing all over the house - without any wires. But hey Apple, this is cool - so why did it take me months to figure out you added this feature? I mean c'mon. I'm with it. I'm hip. (Tocka tocka tocka.) Why aren't you shouting this from the rooftops?