/var/www/wordpress/wp-content/themes/stinger3ver20140327/syle.css
上記の先頭あたりに書きを記入
@import url(http://fonts.googleapis.com/css?family=Josefin+Sans);

style.cssの下記

container #header #header-in #h-l .sitename a {

font-family: 'Josefin Sans', sans-serif;