image path settings for the slider in the Showcase theme

ok I have a quick question about setting the image path for the slider in the Showcase theme. In the settings it says to leave blank for images in the images/ folder. Instead of FTPing them into that folder I just uploaded them using the media library. So my path is http://www.mydomain.com/wp-content/uploads/2013/09/image1.jpg

Not sure what to put in the first line instead. I tried

uploads/2013/09/

but that didn't seem to work. Any ideas? Thanks