Where can I get "Ghostbusters" and "The Super Mario Bros. Theme" for free?

I don't want 8notes.com because i searched it, but I need these for my cousins' birthday comin up, one is turning 9 and loves Super Mario Bros. and the other 12 and likes the Ghostbusters theme, since i don't have money to spend or give them, i wanted to play the theme of their favorite songs for them, i know, it is demanding but, any ideas? And i don't want to download, just free and printable. Is there a site.