iTunes Radio is a new service by Apple that allows you to play any song in the iTunes library. You simply enter a song or artist name into iTunes Radio and it starts playing, it then plays songs related to that Song. So in some ways it’s a bit like iTunes Genius, only instead of being limited to songs in your library you can play any track from the iTunes Store. It’s a great idea and best of all iTunes radio is completely free. Apple plans to occasionally place ads between tracks, just like a commercial radio station. However, if you purchase iTunes Match (£21.99 per year) then you can use iTunes Radio commercial-free. See: