Trouble editing .htaccess

I am trying to enable password protection, and I have added the line:

RewriteRule .* – [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

to my .htaccess file, but I am still getting the message

It looks like your server has FastCGI enabled, which will prevent the feed password protection feature from working. You can fix this by following this quick guide.

I am not positive that I am adding it for the correct place, however. Can anyone provide some help?

<IfModule mod_deflate.c>
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE image/svg+xml
</IfModule>

<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType text/css A2419200
ExpiresByType text/x-component A2419200
ExpiresByType application/x-javascript A2419200
ExpiresByType application/javascript A2419200
ExpiresByType text/javascript A2419200
ExpiresByType text/x-js A2419200
ExpiresByType text/html A3600
ExpiresByType text/richtext A3600
ExpiresByType image/svg+xml A3600
ExpiresByType text/plain A3600
ExpiresByType text/xsd A3600
ExpiresByType text/xsl A3600
ExpiresByType text/xml A3600
ExpiresByType video/asf A2419200
ExpiresByType video/avi A2419200
ExpiresByType image/bmp A2419200
ExpiresByType application/java A2419200
ExpiresByType video/divx A2419200
ExpiresByType application/msword A2419200
ExpiresByType application/vnd.ms-fontobject A2419200
ExpiresByType application/x-msdownload A2419200
ExpiresByType image/gif A2419200
ExpiresByType application/x-gzip A2419200
ExpiresByType image/x-icon A2419200
ExpiresByType image/jpeg A2419200
ExpiresByType application/json A2419200
ExpiresByType application/vnd.ms-access A2419200
ExpiresByType audio/midi A2419200
ExpiresByType video/quicktime A2419200
ExpiresByType audio/mpeg A2419200
ExpiresByType video/mp4 A2419200
ExpiresByType video/mpeg A2419200
ExpiresByType application/vnd.ms-project A2419200
ExpiresByType application/x-font-otf A2419200
ExpiresByType application/vnd.ms-opentype A2419200
ExpiresByType application/vnd.oasis.opendocument.database A2419200
ExpiresByType application/vnd.oasis.opendocument.chart A2419200
ExpiresByType application/vnd.oasis.opendocument.formula A2419200
ExpiresByType application/vnd.oasis.opendocument.graphics A2419200
ExpiresByType application/vnd.oasis.opendocument.presentation A2419200
ExpiresByType application/vnd.oasis.opendocument.spreadsheet A2419200
ExpiresByType application/vnd.oasis.opendocument.text A2419200
ExpiresByType audio/ogg A2419200
ExpiresByType application/pdf A2419200
ExpiresByType image/png A2419200
ExpiresByType application/vnd.ms-powerpoint A2419200
ExpiresByType audio/x-realaudio A2419200
ExpiresByType image/svg+xml A2419200
ExpiresByType application/x-shockwave-flash A2419200
ExpiresByType application/x-tar A2419200
ExpiresByType image/tiff A2419200
ExpiresByType application/x-font-ttf A2419200
ExpiresByType application/vnd.ms-opentype A2419200
ExpiresByType audio/wav A2419200
ExpiresByType audio/wma A2419200
ExpiresByType application/vnd.ms-write A2419200
ExpiresByType application/font-woff A2419200
ExpiresByType application/vnd.ms-excel A2419200
ExpiresByType application/zip A2419200
</IfModule>

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

AddHandler x-mapp-php5.5  .php

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress