Are any of you using windows? If you are, you will need to ensure that iTunes is “loading” with the correct wireless network。
Hence this may help you: (Windows Vista/7/8)
1) Ensure that iTunes is not running and that both your iPod/iPad and your P・C・ are connected to the same wireless network。
2) Now open Control Panel。
3) Now go to Network and Internet (Or straight to Network and Sharing Centre straight away in Icon View^^)
4) On the left hand side、in the 'margin' almost、 there is a button to go to “Change Adapter Settings”、 click on that。
5) Now you should see all active networks as icons。
6) The point here is、 if there are multiple active、 iTunes may load looking for the iPod/iPad on the wrong network、which seems to occur even for Bluetooth networks!So try disabling every network that isn't the network that both your P・C・and iPod/iPad are connected to (every step here is reversible、 if needs be)。 Now ensure the Bonjour Service is running in Services and start up iTunes。
This has helped my friend so far、but there may be other problems for other people、still、I hope this helps someone!(^∇^)I have no Mac solution、sorry (T ^ T)・
じゃあ、また