There is no need to switch anything in your account at all. iTunes keeps a running total of all money credited to one's account from gift cards. Simply input the new card's code and its value will be added to the current account's store credit.
itunes is an apple/mac application. make sure you downloaded the Microsoft version.
You can buy an itunes giftcard from a store. Try to create an account, when it says : type of payment. You should click on giftcard( it says something like this) and then type in your code. To redeem it. theirs a triangle next to your account and click on the button that says redeem. Then enter your new code :)
on my itunes it says "Genius makes playlists from songs in your library that go great together with just one click"
Computer:Open iTunes and click on iTunes store. Once it has loaded, you should see some links in the top right corner of the screen. Click on 'redeem'. Enter the code off the back of your voucher, into the box and click redeem. (You may have to type it in again if it says that your code is incorrect).IPhone/ ipod touch:Open iTunes on your iPhone or iPod. On music, Scroll down until you reach the bottom of the page. There should be a blue box with the iTunes symbol on it called redeem. Click on it and enter your code where it tells you to (again, you may have to type it in twice if it says that your code is incorrect).
Try turning it off, and if that doesn't work connect it to iTunes and reset it if ur willing to go that far. That's what I had to do.
iTunes says that it is an unknown error when connecting to the iTunes store.
Connect it To your computer on iTunes
download itunes. you cant otherwise
after you buy them or receive them you log onto itunes and theres this little box that says quick links in the top right hand corner. In that there will be something that says redeem, click on it. Then, scratch the back of the card off where it says scratch off gently with coin. then in the box on itunes that appeared after you clicked redeem type the code that is on the card and click enter
you need itunes, and sync it on itunes (it says sync ) at the bottom right
Sent it to apple!