How to authorize my computer without a store button
I really need to know, how i can authorize my computer. on the website are only examples with a store button, but in my version, the german one, is no store button. and i really search everywhere. The only thing a could found was the ITunes Store. It makes me sick, that I can't hear my music. There are only buttons for My Music, Lists,Match and to the ITunes Store. Can anyone help me?!
hp computer-OTHER, Windows 8, null