if( ! function_exists( 'videotube_add_login_profile_menu_item' ) ){
    /**
     * @param html $items
     * @param array $args
     */
    function videotube_add_login_profile_menu_item( $items, $args ) {

        if( $args->theme_location != 'header_main_navigation' ){
            return $items;
        }

        // The custom login page url goes here
        $login_url = '';

        // The custom profile page url goes here
        // In your case, it's http://jukeboxculture.com/index.php/profile/
        $profile_url = '';

        if( ! is_user_logged_in() ){
            $items .= '<li class="login">
                <a href="'. esc_url( $login_url ) .'">'. esc_html__( 'Login', 'mars' ) .'</a>
            </li>';
        }
        else{
            $items .= '<li class="profile">
                <a href="'. esc_url( $profile_url ) .'">'. esc_html__( 'Profile', 'mars' ) .'</a>
            </li>';
        }

        return $items;

    }
    add_filter( 'wp_nav_menu_items','videotube_add_login_profile_menu_item', 10, 2 );
}