.htaccess redirect problems - .htaccess

Question

I'm using WordPress on my domain. I originally installed it in a sub-directory:
www.example.com/wpblog/
I have now moved the blog into the root of my site AND I have changed the permalink structure from ../2011/03/name-of-post to ../name-of-post.
I am trying to redirect all links to my blog which use the old URL and structure.
I use this code to successfully redirect from /wpblog/ to the site root:
RewriteEngine On
RewriteBase /
Redirect 301 /wpblog/ http://www.example.com/
But now I need to change the OLD permalink structure to remove the /2011/03/, leaving me with www.example.com/name-of-post (from: www.example.com/wpblog/2011/03/name-of-post). I added this code, which works 100%:
RedirectMatch 301 /([0-9]+)/([0-9]+)/(.*)$ http://www.example.com/$3
The trouble is, that also breaks links to my media files (www.example.com/wp-content/2011/03/name-of-media). I therefore need to exclude the /wp-content/ directory from the permalink redirect (but not the /wpblog/ redirect). I changed the permalink redirect thus:
RewriteCond %{REQUEST_URI} "/wp-content/"
RewriteRule 301 /([0-9]+)/([0-9]+)/(.*)$ http://www.example.com/$3
But this breaks the entire site, giving me an error.....
I'd be really grateful if someone could help me out! I've been tearing my hair out over this!

Answer 1

Try this:
RewriteEngine on
RewriteBase /
RewriteCond %{ENV:REDIRECT_STATUS} 200
RewriteRule ^ - [L]
RewriteCond %{REQUEST_URI} ^/wp-content/ [NC]
RewriteRule %{REQUEST_FILENAME} !-f
RewriteRule %{REQUEST_FILENAME} !-l
RewriteRule /(?:[\d]+)/(?:[\d]+)/(.*)$ http://www.grvhi.com/$1 [R=301,L]
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]