Transfer music from iPhone to iTunes on Ubuntu server

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http://ubuntuforums.org – As a complete newbee... my wife buys music and audio books on iTunes on her iPhone. She would like to put the music on our home server that runs Ubuntu and samba. We we have a labtop (MacBook) that have connection to the home server. I need to copy the playlists from the old laptops and import them to iTunes on the MacBook... can I then just connect the phone to the MacBook and synchronize the phone with iTunes and have all the songs on the server??? should I setup the server as an iTunes media server or.. Please help as I do not have any clue on how to do this and the wife is starting to (Hardware)