I am trying to perm. redirect all http://www.domain.com/modules/mydownloads/singlefile.php?lid=NUMBER to http://subdomain.domain.com/modules/mydownloads/21357

I already got the http://subdomain.domain.com/modules/mydownloads/21357
working, but now i want to 301 all existing singlefile.php urls to the new one... how can i do this in htaccess?

This is what i have so far...

RewriteEngine On
RewriteOptions inherit
Options +FollowSymlinks
RewriteCond %{HTTP_HOST} ^(www\.)?domain\.com/modules/mydownloads/([0-9]+).*$ [NC]
RewriteRule ^ http://subdomain.domain.com/modules/mydownloads/([0-9]+).*$ [R=301,L]

Any help is greatly appreciated :)