Although I was searching for a possibility to include SWF-Files to the website I am working at. Although this is possible with JCE, you have to pay for this extra Plugin.
As I was working on a project with no financial revenue, I have to find cheaper ways for website construction as I don't want to afford payments for Flash-Insertion.
Other than that this Editor is very good. But if you want full functionality you have to either pay for it or look for another editor.