The device shows up correctly in MM and seems to have no problem uploading the files to the device (it can even play the files off of the device). However, the iPod interface says there is no music on the device, although it knows that storage space is being used. Perhaps Apple has changed the file system schema in the new models?
I do not have some of the folders it seems like you would expect:
In NANO/iPod_Control/iTunes I only have one folder "iTunes Library.itlp"
otherwise, there are 5 files:
iTunesControl
iTunesDB
iTunesPrefs
iTunesPrefs (quicktime file)
Play Counts



