I have been itching to upgrade my current home audio setup and need some good ideas. What I would like to have are speakers both in the house and out by the pool in the backyard. I would like these speakers to be able to play from Ipods and from computers with Itunes over the home WIfi. This is what I already have around the house: A yamaha receiver under the TV with surround sound. (pretty much covers the house, sounds good) Two outdoor rock shaped speakers in the backyard. (currently hooked up to a crappy radio with no AUX inputs) 4 computers on the WIfi with itunes and lots of music and pandora Wifi that covers the house and backyard. what do I need to tie it all together?