I really dislike iChat, but at the moment there's no AIM client that suits my needs any better (I'm open to suggestions... I loved Adium 1.x but it won't connect anymore, and the new version -- along with Fire, etc -- is too complicated... I only use one service and want a simple yet customizable app to access it. iChat is simple, but nowhere near customizable enough.) Anyway, I know this is possible, but I guess I'm kind of brain-dead ATM... how do I make it so that iChat shuts up and doesn't play the alert sounds when I'm away?