Multi rss feed redirection with htaccess

Hello i wanna redirect my rss feeds to Feedburner via htaccess.

I wanna point http://www.digitalking.it/feed to http://feeds.feedburner.com/SimoBlog
and http://www.digitalking.it/feed/?lang=en to
http://feeds.feedburner.com/digitalking/haPl

i done it with this code and works fine for the first rss url:

<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{HTTP_USER_AGENT} !^.*(FeedBurner|FeedValidator) [NC]
RewriteRule ^feed/?.*$ http://feeds.feedburner.com/SimoBlog [L,NC,R=302]
</IfModule>

i don’t figure out to make it working also for the second feed url (that has also variable), any help?

Thanks, Simone