I have never downloaded songs or ringtones, so I've never synched that part of iTunes before. Today I synched my phone as usual. Then I downloaded a ringtone to iTunes, and turned on Sync Ringtones, Selected Ringtones, and selected the ringtone i want on my iPhone. Now I'm getting a "Do you want to erase this iPhone and sync with this iTunes library?" message. I absolutely do not want to erase my entire iPhone for one little ringtone. Is that the only way to get it on my phone? If so, I'll do without.