All music gone from iPod Touch. iTunes says its still there.
My iPod touch says "No Content" when I go to 'music'.
In settings > general > usage: it says 40GB is free, which means all my music has suddenly disappeared.
My iPod touch is set to Manually manage all music; always has been & still is.
In iTunes it still thinks all the music is on the iPod, but it wont play. A ⚠ shows if i try to play a track on the iPod. Under the summary in iTunes it says the iPod has 29.5GB of music on it - but clearly it does not.
What should I do? Just resotre the iPod completely?
background info*
I assume this happened a couple of days ago after syncing some photos, but I didnt specifially notice the missing music until today.
Last time I synced some photos it got stuck on 'step 7 of 7' for about an hour - at which point i unlugged the iPod, turned it off/on & synced it again - which then worked. But i suppose this could have somehow caused the music to get lost.
iMac, OS X Mountain Lion