I have an old iPod with all my fav tunes and music I've put on it with different computers I've owned. Music from my cd's ect. I now also have a mac, iPhone and iPad. The problem being, even though I'm sure I've only ever had I apple id, and hey should be all the same, the music on my iPod and mac in iTunes is different. If I connect the iPod and sync it will I lose all the music on the iPod that's not on the mac. My drama being is now music I buy through I tunes I can't get onto the iPod??? There is also music on the iPod I can't get back without purchasing it if I lose it???