Copy the music over to the computer you wish to play it on, and import it into iTunes. When you try to play the file, you will be prompted to enter the password for the account used to download the song. Once complete, the computer will be authorised.
Remember, you can only authorise a maximum of 5 computers.
If you have a Mac then when you have to go into the latest version of iTunes and in the menu bar at the very top of page, click store. then a menu will drop down and the option of authorize this computer. click that. if you have a windows, its really all the same. Open your iTunes app and click store, not iTunes store, just store, then click the button that say authorize this computer.
To Authorize your computer, enter your iTunes program, then click on the tab in the top tab bar named 'Store'. A drop down menu appears, giving you the option to 'Authorize this computer'. Click that option, and it will ask you to enter your apple ID. Enter that, and the process will begin.
In iTunes' Store menu (on the menu bar at the top) select Authorize computer... to authorize your computer.
To authorize a computer for iTunes open the iTunes software and select Authorize This Computer from the Store menu.
itunes
You access itunes on your computer by opening up the file to where you've downloaded itunes to. You open the browser to where itunes has been saved and will restart your computer once you've clicked on it in order to add itunes onto your desktop.
you can put it on a memory stick
plug it in your computer
When you buy an iPod you need to have a computer - authorise - the iPod to it. For some reason the machine has forgotten where it is supposed to be. Check what machines are authorised to your computer. At worst you will need to de-authorise all iPods on your computer and start all over again. If the problem persists then take the machine to your nearest Apple Store.
iTunes for the computer is very different than the iTunes that you have on your iPod Touch. You can only have the iTunes from your computer when you download it for your PC (not for the Mac, there are two separate iTunes softwares) from Apple's website.
If you have iTunes program installed on your computer and the computer is connected to the Internet then you have all you need
you can og into your itunes account from the other computer
Your iTunes balance is saved server side. Long story short, as long as you log in with the same account on the other computer's itunes client, then yes.
activate the phone first and then sync it with your itunes on your computer
Yes - go to http://www.apple.com/itunes.
Sync your iPhone to iTunes on our computer