If I download a couple of tracks from an album then later decide I want the whole album, does clicking "Buy Album" charge me again for the tracks I've already downloaded? Or does it realise that I already have some of the tracks and not charge me again? Basically, is it safer for me to go through the remaining tracks one at a time? Edit: Never mind, it popped up and told me that it would download the songs again. And sorry for not posting this in the music section, I'm half asleep today!