Hi. My iPod classic is Synched to my old Macbook and it's iTunes Library...140GB's worth. I have a new MBA that has zero Tunes in the Library. I want to buy some music online, place it in the new MBA iTunes Library and synch that new music to my iPod. How can I do this without losing all the current music on my iPod and still keep it synched to my old MacBook - is this even possible? Cheers.