Open the iTunes application.
Note: iTunes may open automatically when the handset is connected.
Connect the handset to the computer via USB cable.
Click File from the menu bar, then select Transfer Purchases under Devices.
Note: If the menu bar is not visible, click the Options icon and select Show Menu Bar.
iTunes will begin synchronizing recent purchases from the handset into the iTunes Library.
Content purchased on the handset is now synchronized with iTunes.