I bought an album from the store, downloaded it, then formatted my computer. When I tried to redownload the music I bought, it wouldn't let me. What should I do?
You have to buy it again. You can only download purchased items once.
Some complain about this, but think about it, if you buy a cd in a music store and then lose it you have to rebuy it. They aren't going to give you a backup copy.
That's stupid because they know you bought it and should be able to provide another copy. Most online shopping sites allow you to download as many times as you like once you enter your password.
Microrario, I feel sorry for you. $10 isn't really much money, but it's never nice to see your money go down the drain.