Just speak to the developer and they'll give you the swf (assuming you have permission to use their copy). Of course if it is a Flex application (i.e. with remote calls and the like) you are unlikely to be able to use it as is. But if you speak to the developer they should be able to tell you how to deploy it.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com
subject: how I may copy swf components in JSP Pages, and use in my website..