[slayda]

Actually Marcy, you can use Calibre to put your organized books on your NC (I'm sure on a rooted NC & I think also on a stock NC). They are not organized in your NC's Library or book shelves but thay are in your NC's "My Files" if you use the correct setup in Calibre's Preferences ==> Sending books to device. I imagine this is what you did with your Sony. Here is the line I use for this "{tags}/{author_sort}/{series} {series_index:0>3s| - | - }{title}". Under My Files there is a folder "Books". This line creates subfolders with tags. (I make sure all my books only have one tag. I'm not sure what you'd get with multiple tags.) Under each Tags folder, a subfolder is created with the field form Calibre's Author Sort & the books are then in those folders. At each level it even tells you how many items are in the folders (could be subfolders or books). If/when I figure out how to do screen shots on the NC, I'll add pictures.

If this is of interest to you and my post is confusing, just PM me with questions. While I'm not an expert, I have had some success with it.

Edit: Books on the SD card added in this manner will not show up under "My Files/Books" folder. Instead they'll show up at the top (root) level (i.e. under the "My Files" tab - not the "My Files" folder) of the SD card. Also books on the main memory will show up in the "My Shelves" tab (but not organized) and those on the SD card will not show up in the "My Shelves" tab at all but only under "My Files" tab, although there is a "My Files" folder that the NC creates on the SD card. (Remember, "Consistency is an indication of small minds." or something like that.)