XenForo Media Gallery .htaccess redirection help

[imthebest]

Hi,

I'm using the XFMG add-on and I'd like to redirect these URLs:

www.mysite.com/gallery/users/username.123/
and
www.mysite.com/gallery/users/username.123/albums

both to:
www.mysite.com/users/username.123/#xengalleryAlbumUser

Please note that username.123 is a variable value.

How I can do this? Maybe @Jake Bunce got an idea?

Thanks!
Super120