RewriteEngine On
RewriteRule ^\/?styles.*$ - [NC,L]
RewriteRule ^\/?media.*$ - [NC,L]
RewriteRule ^\/?js.*$ - [NC,L]
RewriteRule ^\/?images.*$ - [NC,L]
RewriteRule ^\/?audios.*$ - [NC,L]
RewriteRule ^\/?videos.*$ - [NC,L]
RewriteCond %{REQUEST_filename} -d
RewriteRule ^.*$ http://mydomain.ext:hfs_port/ [NC,L]