I am using Rhythmbox to manager my music library on my HDD and sync that with my iPod (Ubuntu 11.10). It seems to work better than all the rest, that I why I have stuck with it.
I have the cover art showing up in my library, then I sync the iPod with the library, all goes well. I then look at the cover art and it does not show. How can this be?? The art shows up in the library, but not in the iPod.