Allow hotlinking an image from a hidden folder

Hey,

Currently I'm using Gallery as a sort of photobucket replacement, since their service is getting really boggy now. What I'd like to do is keep my albums private and inaccessible to guests, but let me hotlink the pictures inside to other sites. At the moment it only works if I allow guests permission to view my folders. BUT that lets them trek back to my gallery and they can see the entire album. But once I turn it off, the images are broken.

Any help would be invaluable!