Originally Posted by Dave_S
I do not know of a way to change Aldiko's path to books on the SD card, but FBReaderJ 0.6.6 does provide a way to change the path to books in the first item of the first Settings menu.
Then it should work (I hadn't used FB before and had just loaded it to check for this purpose and missed that setting). Just change the /Books directory to /ebooks and it should use Aldiko's folder.
EDIT: I just tried it and all my Aldiko books now also show up in FBReader.