Hey, I have an iphone that I use to buy all my songs with (I had an actually itunes library set up on a computer, but that on it broke, and now that's all gone). I have this 15 dollar gift card, and I want to know how I can use it with the iphone, or if it's even possible without the actual computer. Thanks so much if you try to help me! And if you don't...well, boo.