At a previous employer I won both of these IPods during sales contests. My mom had been using my Shuffle over the last year and I don't remember the last time I used my Nano. I'm sure I need a serious library update. Though I consider myself pretty technically astute, I'm still pretty clueless when it comes to MP3 players and I-Tunes. Can I hook both IPods up to the same I-Tunes account? What if I need to switch computers? What's the easiest, cheapest way to get the most music? Help!