i just became an iphone developer, mostly to try and see if i can make something fun.... but i only have one iphone, and i wanted to see if there are any concerns about turning my day to day phone into a developer phone running 3.0 beta 4 (besides the expiration issue) also, I have 40+ GBs of music and videos, and am curious if itunes 8.2 beta will hurt my library at all. Thanks.