Hi, I want to upgrade Itunes to the newest version. Usually, there is a message that always pops up whenever I am opening Itunes saying ‘Itune 9 is available, do you want to install.’ So I tried closing Itunes and then re-opening it to click on that pop-up message but this time it was gone. How can I install or upgrade to the newest version without downloading a whole new Itunes account? Can somebody help? I would be really glad. Thanks.