hello! i have an idea of what i want to accomplish, but i'm not entirely sure how to do so. i'm hoping some of you guys could help me out. i want to be able to have a wireless speaker that i can bring around my apartment (most importantly, on my back porch), and wirelessly stream music to. one idea is to stream music from itunes on my macbook in another room. i could then control that itunes with the remote app on my phone. i don't carry music on my iphone, so would it be possible to stream music from my spotify app directly to the wireless speakers? are either of these scenarios possible? i know i can buy an airport express and plug that into my speakers, but i want to be able to move my speakers around, especially bring them outside.