Moganium

Manually installing isn't going to work because it doesn't bypass the procedure during the setup. What you do is download the wmp6codecs.exe from windows after you press ok in the setup window, place it on your desktop under a folder named "Downloads" (not sure if it's case-sensitive, but do it anyway). Hit setup again and when it reaches that download procedure, it'll see that you have the file and it'll proceed from there without problem and it'll install the codecs for you, again).