Question with Music Files and New Desktop S/W v6.0

I just installed the new version of the desktop software, version 6.0.0.43. I like the interface. It looks a lot cleaner than the older version.

BUT--I can't get to the list of songs on my media card. All I can get to is a list of Artists, Genres and Albums on my computer. In fact, I have no idea how to either add or remove songs from my device with this new version.

Besides this issue, I like the new version, but as far music goes it doesn't seem very intuitive.

Any help with this is GREATLY apreciated!