Hello, I have what I think is a pretty simple question. Yet, I don't know the answer. My wife's Shuffle is formatted for my mac. She always uses my computer to charge it, get songs, etc...However, she's going to be gone for a few months for school, and won't have access to a mac. Can she simply connect (via USB) her Shuffle to a Windows computer and charge it? Or, will connecting it to a Windows computer affect her formatting? Will it try to reformat the Shuffle? Thanks.