Problem installing newest v. off itunes, so cant update new iPod

So, I got the new iPod Nano. And to get music on it I need to get the new version of iTunes. But when i try to install the new itunes the install app suddenly quit. How can I get it installed? Need som music on the device!!!

btw: dunno if this came in the right category, new on the forum, cause didnt get help on the norweagian mac forum.