Q: We often use an iPhone in some sort of bowl or flower vase as an impromptu speaker for picnics or dinner on the patio. This gives zero stereo separation of course. I understand that the iPhone 4 and newer allow adjustment of volume left and right, so if we had two iPhones to set up as left and right, how can I get the same music to come out of both completely in sync? - Joe A: There are a couple of different ways to accomplish synchronized music…