I have an iPod touch that my daughter uses, and I'm trying to transfer music to it, but not my entire iTunes library. It doesn't come up in my sidebar or in the Music app, even though I've "trusted" my computer. Any ideas the easiest way to do this? I was hoping there's some click and drag, or just selecting certain folders or something. Google was not terribly helpful and mostly suggested these transfer apps that you have to pay for.