On the photo page on Flickr, click on the box with the arrow above your username/photostream. Then click "Grab the HTML/BBCode", select the BBCode option at the bottom of the pop-up, select the size you want from the drop-down box, then copy the code in the text box and paste it into KIC.
I pasted the HTML/BBCode into the media file and it converts it to a link. When I save it looks like the image, but when it gets to the site it converts.