[webkit-dev] file drop getting filtered?

Hi there. I have yet another drag & drop question, but so far I couldn't find the answer to my question. I got the basics of drag and drop ok, the trouble is, it will not accept dragged items (files from finder) that have a ".flv" extension. I can manage fine with gifs, jpegs, htmls and the like, but I need to get it working with flv files (those will be dealt with the macromedia flash player). I am really confused here. somewhere webview is filtering the kind of files I can drop from the finder. should I use webpolicy somehow? thanks a lot, arthur