...library and replace it?what? Does this mean all my itunes on my ipod part of the phone will be erased? "an iphone can be synced with one one itumes library at a time. Erasing and syncing replaces the contents of this iphone with the contents of this itunes library." Do I want to erase this iPhone (my phone) and sync with this iTunes library (ringtones)? is what it is saying to me. HELP!