My girls are getting iPod touches for Christmas. I am trying to set a few things up for them before I turn them over to them Friday. I need to figure out how to use iTunes on their computer to load music on them, but they each have their own apple ID. Is there a comprehensive tutorial on how to do this? ITunes always gives me fits, but I have to do this, so hopefully it won't be the death of me. Thanks for any wisdom from afar.