Hi. I'm a newbie about to set up an internet connection at home. I would like to set up a wireless internet connection and therefore need a wireless router. I'd also like to be able to play music from itunes through my hi-fi wirelessly. Is airport express the only box that can do both these things? Can i connect to my hi-fi using other wireless routers? I notice that airport express is a g router- is that noticeably slower than an n? Thanks very much, and sorry if this questions been asked before!