I have a iPod. When I connect it to my computer it shows on my computer but when I use copy trance it shows that no iPod music library was found on your iPod.And also my iPod doesn't show iTunes.What should I do now. Please answer me.

What you could try is going into your library on itunes, and either going ctrl +a for all music selected and drag it onto the iPod music bookmark, or if you do not want all of the music on there, hold down the ctrl button and click on the music you want and then drag to the music iPod bookmark. Hope this helps :)