You are able to enter codes once a week. I have found the best deal is buying the 6-packs from Walmart. My local Walmarts have them priced at $2.00 for a 6-pack. Each bottle has two different codes one it, one on each side of the bottle, so for $2.00 you are able to get 1 1/2 weeks worth of codes. I participated in the program for 6 weeks last year and the lowest amount I ever won was 5 songs. I won 20 songs one week! You can't buy songs anywhere for that cheap! So, these are not completely free, but pretty close! Some of your local stores may have 'buy one, get one free' programs too that would make this even cheaper. There was also a coupon for $0.55 off when you buy 2 Sunny D's ($0.55/2 Sunny Delight Products 01/08/2012 SS Insert (exp 03/31/2012)). This could help get you started! Enjoy the music www.sunnyd.com.