Its presence in a previous beta was a bug. The correct behaviour is for a single level.
The reason it's not there is to make the Artists view analogous with the Artist search screen on the player (accessible through the remote).
Once soup is implemented on the player, it _will_ be Artist\Album. At that point, it makes sense to reinstate the Artist\Album hierarchy in emplode.
Now, I've considered using Artist\Album anyway, but I thought it would be better to make it analogous to the search screen.
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roger