@Storm: thank you, i like wmp11, its got a brand new interface and the functionality is good too. it got more features than its predecessors, but it takes time to load wen u hav a slow pc...
@Bilaltq: watch bro
first do this..
if the sliders hav been played with then click reset to restore them to their default position which will hopefully make the interface black, or if they r in the default position and black color is not showing then position them as they are in the image below.