Image URL's using CDN?

[ukbazz]

Hi - Using Prestashop 1.6 and module is still best one out there! I have just added a CDN for site and added Media Server URL in Admin Performance tab in the Media Server Settings. All working well, but the slide images are still using the Site URL's not Media Servers URL's. How do I edit module template image link to take Media Server URL?
Thanks
Baz