somehow i figured out how to download these files, but you should not try to download Mortal_Kombat_9_-_Bosses_+_Skarlet_+_Classic_Costumes_Mod from the mediafire link above, it will not work. Instead you should try getting this zip file from this link:
http://www.mediafire.com/?nbawmr0nipioc06. Kredits to Scorpion2k7