Add your pictures once, or let BioniX watch a folder and add new pictures by itself.
The playlist is the list of thumbnails in the BioniX window. BioniX picks its wallpapers from the playlist. Copying a picture into a folder on your disk does not add it to the playlist; one of the ways below does.
Ctrl+D). You can also right-click in the playlist and choose Add images from folder...Insert).Ctrl-click, and press Open.Drag images or whole folders from Windows Explorer and drop them on the BioniX window. You can also drag an image straight from your web browser.
Shift while you drop, and the dropped images replace the whole playlist instead of being added to it.
Press Ctrl+S or choose Playlist → Save playlist.
BioniX also saves the playlist when you close it, as long as Automatically save the playlist stays ticked in the playlist settings (it is on by default).
There is none. The BioniX screensaver shows the playlist that BioniX loaded or saved last.
To get new pictures into the screensaver, add them to the playlist as shown above and save it with Ctrl+S.
The screensaver shows them the next time it starts.
You may find a folder named BioniX categories inside your Pictures folder. It is where the Wallpaper → Move to folder command puts the images you sort into categories. Copying files into it does not add them to the playlist: add them with one of the three ways above.
The playlist follows one folder: drop a picture into it and it shows up in BioniX.
From now on, every picture you copy into that folder is added to the playlist, and every picture you delete or rename there is removed or renamed in the playlist too. The lock stays on when you restart BioniX.
After the 15-day trial, keep BioniX free through the community program: post about BioniX, and how far your post reaches decides your membership.