I briefly looked into the same possibility, but I am trying to keep my physical modifications of the iPod to a minimum – mine is pretty tight in there with the

I briefly looked into the same possibility, but I am trying to keep my physical modifications of the iPod to a minimum – mine is pretty tight in there with the big battery, although I could buy a deeper back plate. Power and audio can easily be multiplexed, but I don't know about the playback control piece. The dock connector needs to be intact for USB