Download onto your computer, import into itunes. That’s what I do (we use a mac, but I assume it’s the same if you have a PC)
11p is cheap, most albums there are about 60p.
EDIT: From the site:
A: First of all you have to download purchased music to your computer and extract it from archive if you download in Zip file. After that you need to download iTunes and install it due to instructions. Then run iTunes.
a) To import an individual mp3 file, choose File > Add File to Library, and then locate the music file you want added to your library.
b) To import all the mp3 files in a folder, choose File > Add Folder to Library, and then locate the folder containing the audio you want added to your library.
Sync your iPod/iPhone
1. Connect your iPod/iPhone to your computer.
2. When the iPod/iPhone icon appears in the iTunes window (below Devices), select it.
3. If the Summary pane isn’t showing, click the Summary tab.
4. To automatically sync your iPod/iPhone:
a) Make sure that “Manually manage music” is not selected.
b) Click the Music tab and do one of the following:
To automatically update your iPod/iPhone with all the songs and playlists in your library, select “Sync music” and then select “All songs and playlists”. iTunes loads the songs and playlists in your iTunes library onto your iPod, and deletes songs from your iPod/iPhone that aren’t in your library.
To automatically update your iPod/iPhone with only certain playlists, select “Sync music” and “Selected playlists,” and then select the playlists you want synchronized.
To manually sync your iPod/iPhone:
a) Make sure that “Manually manage music” is selected.
b) Click Music (below Library, on the left side of the iTunes window) and then drag songs and playlists to your iPod/iPhone.