The development of media-gfx/keyjnote has stopped, the homepages does not exist anymore, and the original SRC_URI is also invalid. The project is continued as "Impressive", which I added to the tree as app-office/impressive (at that moment I did not know about its origin). Please decide what should happen to keyjnote. I would suggest a pkgmove to impressive. I added symlinks with the old program name to the impressive ebuild to make the transition as smooth as possible.
*** Bug 304455 has been marked as a duplicate of this bug. ***
As there was no response either here or on IRC pings, I've done the package move myself.