// comment out line 32
// bfi_wp_enqueue_script('cufonfont', '//cdn.jsdelivr.net/cufon-fonts-library/0.1/' . $currFont . '.font.js', array('cufon', 'jquery'), NULL, true);

// add your font instead
bfi_wp_enqueue_script('cufonfont', 'http://mysite.com/wp-content/uploads/mynewfont.font.js', array('cufon', 'jquery'), NULL, true);