Thanks for the answers regarding drag and drop. That's what I imagined but I wasn't certain. I'm guessing that you can therefore organise the library on the X1 by folder (like you can in Foobar2000), as well as the usual Artist, album, genre, etc?
Is the same true of the X5 (drag and drop? Organise by folder?)
Oh, and with regard my other question, to satisfy my curiosity further, when were the X3 and X5 released?
Cheers. And hope you're all enjoying...