You can have 100 ipods all work with one mac, but not the other way around...<br><br>that is, you can load her iPod from music off of your mac but then when she plugs it into her cube the music will be invisible.<br><br>of course, there are many third-party ways around that too. Its not really a big deal, just an inconvenience.<br><br>we're a two-iPod family right now too, have fun! <br><br>