Well I have a surround sound stereo in my garage that my patio speakers are ran to. I just want to stream music from my iPhone or iPad while sitting on the patio. I have an airport express that will work while in the garage, but it drops off the airplay if I move on the patio where I really want to use it at. Can I purchase another express to piggyback the signal if i'd set it in the kitchen which would be the halfway point between the patio and garage? The patio to garage is probably 50 feet or so and it's obviously obstructed by walls. I'm not sure what to do here? Any advice!?