USER INTERFACE:
---------------
	* add statusbar (and time-slider)
	* cleanup the codebase
	* in the playlist/devices tab - show files only if there are
		some files
	* left mousebutton in the playlist to move/play
	* clean up playlist code
	* add controls for balance, ...
	* clean up playlist-saving code
	* implement runtime skin/noskin change
	+ add spu-off and audio-off entry

XML:	
----
	* the first thing should be XML-ifying the skin-config files
		-> we can gain experiences there
	* move out the XML plugin configuration

UI:
---
	skin-code: splitting button (which is just a plain button)
			pressed, unpressed,
			pressed-mouseover, unpressed-mouseover
		   and pictogram code (just simple pictograms)
			and overlay these pictorgrams

			pictograms should only have 2 colors
				1) background which is transparent
				2) foreground

			plus the skindata file can set for colors for
				each pictogram (to use a different
				pictogram for each of the 4 button states)
