However, when you purchase the music, be sure to select iTunes plus music (There should be a plus sign next to the price of the music), as the regular iTunes music has a DRM on it called FairPlay (Apple's way of stopping pirates[of the digital variety, not ship] from copying and distributing the music). FairPlay is a bag of hurt, because it won't allow you to play the music on anything else except an iPod. Just make sure you get the iTunes plus music that isn't encrypted with FairPlay.
~Jake
@Jammy: I wouldn't be too concerned about Apple wanting your credit card no. as they are a good company
P.S. If you enter your credit card no. you will be able to purchase more music once your gift card runs out of money (Or you can buy gift cards for yourself and redeem them for yourself)
P.P.S. Here is a link to the UK's iTunes plus store (all iTunes plus music)
http://itunes.apple.com/WebObjects/MZStore.woa/wa/iTunesPlusPage
