Will Amarok 2.0 allow dragging Plasma applets from the main window to the Desktop?
No, due to technical limitations this is not possible yet. But by the time Amarok 2.0 gets released there will probably be many Desktop plasmoids available anyway which will let you display information provided by Amarok as well as control Amarok. For the whole 2.x series, we have not decided yet. Let’s see how thing roll up.