I picked up an iTunes "Pick of the Week" free song card. As I tried to enter the code in iTunes on my iPhone, I noticed that the "Redeem" button, which I believe was located at the top left corner of the "Downloads" section, was not there. I looked all over the place in iTunes, but I was unable to find it anywhere. How are we supposed to redeem those free music and gift cards on the iPhone now? TIA!