CDN will be native support in play 1.1

Play CDN Support Module

This module allows you to use CDN url or subdomain

Enable the CDN Support for the application
In the /conf/application.conf file, enable the CDN Support by adding this line:

# The CDN Module 
module.cdn=${play.path}/module/cdn

and adding 2 line follow:

# The JavaScript Base URL and StyleSheet Base URL
script_path=http://localhost:9000/public/javascript
stylesheet_path=http://localhost:9000/public/stylesheet

Example
In The **/views/main.html

# for stylesheet
<link rel="stylesheet" type="text/css" media="screen" href="@{'/public/stylesheets/main.css'}">
bc. # Replace to 
#{cdn.stylesheet src:'default.css',media:'screen,print' /}

# for javascript 
<script src="@{'/public/javascripts/jquery-1.4.2.min.js'}" type="text/javascript" charset="utf-8"></script>
bc. # Replace to 
#{cdn.script 'path/to/jquery.js' /}

Enjoy It.