Coulod someone with 2.0 software on their phone try downloading an app from the itunes store on their mac (or pc) then try downloading it via the app store on the iPhone? will it charge once? or will it charge again? i know that if you were to delete an app from your computer you would be able to redownload it for free using itunes but dont know via the appstore. Just wondering because ive stocked my computer full of apps i want, but am now thinking what if i dont come straight home... then i cant do monkeyball for a few hours. Thanks!