Free Zune Pass Subscription

After doing the 14 day free trial of Zune Pass, I've decided to continue the service. I'm just lucky because my brother liked it and he's paying for it. Haha. Now, I have a free Zune Pass subscription courtesy of him. I tried to find ways if there are sites that will give free Zune Pass codes and I think there is but I don't know if it will work. Maybe I can ask one of my friends to try it and will tell you if there is a free Zune Pass hack out there.