thats really good if you have preinstalled soft on your PC -you dont worry,but if you dont have or lost in some uncareful ways, the question is what to do? it becomes boring to watch films through Classic playar so we have to search some good multimedia soft for example WinDvD or smth else.but often even if you installed these programmes video wount launch or some sound losts-the answer is to find good quality codecs... but which one? so try to answer