Here you go, already tested in your post over at the testing area of TFL if you wanna see my genius in action:
Put this: http://image1ex.villagephotos.com/944150.jpg
in between the image tags.
See what I did? I just put the cursor right in front of the number in the string, hit backspace until I got to the hash, then added a ".jpg" on the end of it.
Kinda clunky, but I'm a clunky kinda guy.