Manually manage music without deleting content from iPhone
HI there.
I recently bought a MacBook Air (which is awesome, by the way) to replace my aging Windows/Linux based laptop. I wanted to add some more music and videos to my iPhone 4, so I changed the option in iTunes to manage the content manually. After I apply the setting, I get a message stating: "This iPhone is synced with another iTunes Library. Do you want to erase this iPhone and sync with this iTunes library?"
Since I don't want all of my content erased off of my iPhone, what should I do? I could have sworn I've deauthorized my iTunes username on my old computer, so I thought that would have taken care of this. I really don't want to have to add all of my content all over again, but I suppose if I have to, I will. What kind of options do I have here? Thanks in advance!
MacBook Air, Mac OS X (10.7)