You can change skins as often as you like, but
you must be in full mode to do so. To return to
full mode, press CTRL+1.
The skin that you apply may not have all of the
functionality that the Player supports; the functionality of a skin
is determined by its creator. For example, some skins do not have a
Video and Visualization pane. Consequently, you cannot view video
clips, DVDs, or visualizations in those
skins.