hi i'm thinking of starting to download music, probably from amazon, now i know they download as mp3's and i believe you can play them on anything you choose, is this correct, also, i also believe that anything you download remains available in the amazon cloud, is this correct, if so i believe i can access the amazon cloud from my iphone and play my music from there, again is this correct? i'm already signed up with amazon as my mum all but lives on that site and ebay lol any how, cani use those details and is there anything else i need to do? is there a charge for using the cloud? sorry for all of the questions trace