The plugin looks quite nice, but the copy to clipboard function does not work. The div element with the embedded flash object is correctly created, but the content is not passed into the clipboard. You can test that here: http://mariusbancila.ro/blog/2007/09/13/wpf-tab-control/.
I looked at the web for what a possible solution could be and nothing worked. I tired replacing clipboard.swf with other versions found (suggested) on different blogs, but no change.
Hope you can help.