Songs not showing up in ITunes library?

I just got a new laptop, and I just downloaded the new ITunes version. My songs from my old laptop are in my iphone, and when I plug it in my new laptop, the songs only show up in the "On this IPhone" aisle and not in my "Music" library. What do I do?

Connect your old computer to your new one and move the files and other stuff into it (:

I do not want to scare you but itunes work in a very weird way… Almost all the time when you switch computers it ask you wipe your library some thing to do with the anti piracy acts… I think. You need to back up all your music from your ipod on your old pc have them in a folder on your desktop and verify that all your stuff is there before synquing it on your new pc…