I have a 8 gig itouch and recently whenever I plug it into itunes to recharge and add music/apps it says my ipod is full (which it isnt). The bar on the bottom of my summary page says I have 2.38 gigs of audio, 56.7 MB of apps and 4.63 gigs of "other". I have no idea what this "other" is, I have no movies or photos. Help please? What can I do?