Reinstalled Mountain Lion on my MBA and now my iPhone won't sync to iTunes because it thinks it's a different computer. iTunes wants me to erase the iPhone to sync it with this copy. I don't use iTunes for much of anything because I don't keep music or videos on my phone and I do all my backups to icloud. However, now I want to copy an audio book (MP3s) to my iphone and was trying to use itunes to do it. Can anyone tell me if it's safe to select the option to erase my iphone? i.e. will I be able to easily restore from icloud? and, Is there an easier/better way to get the audio book MP3s on my iphone? Thanks!