It happens time to time. It's even more annoying today. None of my devices just shows up on iTunes over same wifi network. So I, once again, had to take out the wire, and connect the iPhone to mac just to make it show up again. Now, since I already connected, I synced it because it's quicker. But as soon as I disconnected it, the iPhone disappeared from iTunes. WHY?? WiFi syncing is ON, and has been ON for a long time. Anyone can help me? I want all my devices to be automatically shown in iTunes on same wifi network. So that if I just click Sync button, it will sync right away wirelessly. It's supposed to work, but since a few months ago, it's really unstable. Thanks.