mydomain.com > www.mydomain.com
m.mydomain.com > m.mydomain.com
mydomain.com/page.php > www.mydomain.com/page.php

Options All -Indexes
RewriteEngine On # Turn on the rewriting engine
RewriteCond %{HTTP_HOST} !^www. [NC]
RewriteCond %{HTTP_HOST} ^([a-z.]+)$ [NC]
RewriteRule ^/(.*)$ http://www.%1/$1 [R=301,L]
RewriteRule ^download-([A-Za-z0-9_-]+)/?$ download.php?index=$1 [NC,L]
RewriteRule ^videos videos.php [NC,L]
AddType application/octet-stream mp3
RewriteCond %{HTTPS} =on
RewriteRule ^(.*)$ http://www.music.lk/$1 [R=301,L]

RewriteCond %{HTTP_HOST} !^www. [NC]
RewriteCond %{HTTP_HOST} ^[^.]+.[^.]+$
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]