I'm about to get an iPod mini and had some questions about prolonging the life of its battery and getting the most out of it: 1. Does the battery need to be calibrated, meaning completely drained and then recharged once before I start using it? 2. I have been told that it's bad to run the battery to empty and that I should charge it only when it's almost empty. It's hard to see the little battery icon though. How can you tell that it's almost empty and what will the mini do when the battery has almost run out? 3. What should I do with the mini if I don't use it for a while? 4. What other steps should I take and settings should I use to make the battery last the longest? Thanks!