I just bought a 7th Gen iPod Nano. Seems like a neat little device for using during workouts (definitely not the swiss-army knife like my iPhone is of course). I set it up last night at home on my Mac and sync'd with iTunes to get my music on. I also created a Nike Plus account so I can use this as a possible replacement to my FitBit and track steps and sync at work. So at lunchtime at work, I try to sync the Nano to my Windows laptop and I get an error in iTunes that says I need to re-format it. It almost seems like the Nano can only sync with a Mac OR PC, but not both. Is that right? I've never had an issue like with with my iPhone or iPad when connecting to different machines, even if one was a Mac and the other a PC. Thanks!