I'm considering about buying an iPod,but I still have some questions: 1. about the battery,iPod uses Sony rechargable battery LIS1225APP, and it's said that this battery can only be recharged for about 500 times. So I wonder if I use it for a year,then I have to throw it away?!! It's quite expensive to replace a new battery, yes? 2. I am wondering that if an iPod can store windows common files,you know I want to buy a iPod for windows,and I want to use it as a portable harddisk,too. Thank you for help.