Um this I think could be pretty close to what you want, except for the last request "besides i can plug my iPod can transfer music though it". What do you mean by that. Like plug it into your speakers and have it transfer the music? Why would you need that if you could just listen to it on your computer? (sorry i just relised you said replace you computer speakers)
http://www.klipsch.com/product/product.aspx?cid=907 also sold at the apple store.