Ipod Brazilian Wax Is Their Anyway To Download The Songs You Have On Your Ipod To A New Computer? Please Help Me On This One.

Is their anyway to download the songs you have on your ipod to a new computer? Please help me on this one. - ipod brazilian wax

So I visited my friend in Brazil and download all your music on my iPod from your Mac. The problem now is how do I delete music from my iPod onto my computer without having all my music on my iPod. Besides, how can I get more music on my iPod to delete from my computer without the current list on my iPod. I did not know because a friend told me to delete everything on your iPod, on my own. I really want to all my friends in the Brazilian music, save, help!