The disadvantage for doing it in-app with Kindle is the minute you leave Kindle your eyes get assaulted with bright white screens. For example, if you hop out of Kindle to check email or the web. With the system-wide setting you stay "white on black" until you triple click to turn it off. Much preferred for me.hopefull avi to ipod converter can solve itBest tip yet! Definetly going to use this for some of the backups of older devices!Is it alright to delete ALL of them then plug in my iPhone to re backup the latest?if these are "slightly modifications" than i'm totally in for iPhone 5… can't wait.