Hi,
This feels like a dumb question, but I can't seem to figure it out.

How do I move albums up and down the directory tree?

ie. I have a sub-album which I now want to appear right at the top alongside all the root-level albums.

Within a level (say top level) you can use drag&drop. If you want to move a subalbum to the toplevel you have to use the move function on the right on each album's page.

thanks. I spotted this functionality in the new screencast (i am using an older version). I will upgrade.