Hi. This may seem trivial, but I'm trying to make the most out of the space on my iphone 4 (16GB), and I've noticed about 1GB of audio that can't be accounted for. When I click on music under my iphone in iTunes, it says there is 10.80GB, but when I click on the iPhone icon (in iTunes) it says 11.68GB of audio, and that's after removing my audiobooks and voice memos? I don't think it's associated with any apps. My only music apps are pandora and shazam. Anyone else experience this or know what it could be? I was thinking album covers but, that would be a lot of space for digital album art?