would it be possible to add some redirection magic to .htaccess to enable the use of the free cdn at http://www.coralcdn.org/ ?
I've tried using details from this blog post :-
but not got it working.
I don't know that but if it involves hosting albums on another server no: http://www.zenphoto.org/2009/03/troubleshooting-zenphoto/#17
There's no reason it wouldn't be possible. CoralCDN works entirely off of DNS redirection, so it should work with any website.
However, I couldn't tell you how to make it work with your own website. You'll have to figure that out on your own.
Got it working with :-
`
Header append X-Coral-Control "redirect-home"
RewriteCond %{HTTP_USER_AGENT} !^CoralWebPrx
RewriteCond %{QUERY_STRING} !(^|&)coral-no-serve$
RewriteRule ^cache/(.*)$ http://gallery.weloveit.info.nyud.net/cache/$1 [R,L]
`
Also needed to make sure I had the headers module activated and running.