I'd really like to know how to deal with a seemingly simple problem I'm having with iTunes. I've got an account on the Mac, and my daughter has one. I've let her buy some songs, which sit in her library. My new iPod, on the other hand, is synched with the iTunes library under my account. How do I share the two? There's a "share" option in the settings, but I'll be damned if I can figure out what it does. What am I missing?