I have a macbook at home. I use Windows at work. I can't use iTunes at work because it can't read the mac formatted ipod. I can't format the ipod using a windows filesystem because the macbook/itunes can't update the ipod if it doesn't use the mac filesystem. There's third party software out there I could get to let me read that ipod on Windows. But I'm a little surprised that iTunes on Windows can't read the mac ipods. I would've thought Apple had source code lying around somewhere to read those filesystems.