Hi. I would like to fill my uncle's iPhone 3GS with some music as a part of a christmas present. I will have to 'kidnap' de phone for a moment and transfer the music rapidly. I will be using my mac to do so and I'm not sure how to do it because I don't want to sync all my contacts and data with the phone, nor erase any of his content. Is it possible to do so without messing with his data? Should I be using any software beside iTunes? Thank you vey much.