I just got a new macbook air, and i want to sync my music onto it from my iphone. it says since i have an itunes account on a different computer that if i sync it to my macbook eveything will be erased on my iphone. how can i just transfer my itunes library and account over to my macbook peacefully?
Transfer your entire iTunes folder from your old computer to your new one using one of the methods outlined here: http://support.apple.com/kb/HT4527. (Be sure to copy the entire folder, not just the music.) After doing so you new computer will recognize your phone and not attempt to delete any data when you sync.
Even if i am going from a pc to a mac?
If you're moving from a pc and you want to move other data as well, you can use migration assistant (see http://support.apple.com/kb/HT2518), which you download and install on your pc from here: http://support.apple.com/kb/DL1557. If you only need to move iTunes, follow this guide: http://www.macworld.com/article/1146958/move_itunes_windows_mac.html.
iTunes probs
