There’s nothing magical about this. If it’s on the Fuze, your computer should be able to see it in one mode or the other.
However, Windows likes to hide things. Look in your (Windows) Help for “hidden files” and how to un-hide them.
I understand your suggestion abot the folder views in Windows, and unfortunately, that does not correct the issue. I also understand that the USB settings should be checked. In my incident, the songs were not visible in Windows in either USB setting. My incident ocurred after I rebooted my Windows computer with the Fuze attached via the USB cable. That should not have had any effect, and it may be a coincidence. I think it may be an issue for your engineers, as it seems to be happening with some frequency. But, I really don’t know…