I think it would be nice to implement the album time somewhere on FB2k. Winamp does this, and its very useful so you can take a glimpse at the number and see how many minutes or hours you are going to be listening to the cd for.

set "show total time of selected tracks" in preferences --> display --> default user interface

I meant having the total album time without highlighting everything (its annoying)

It's tricky to decide what complete album is (what if there's no %album% tag? What if user decided not to put complete album into playlist? What if playlist is shuffled? etc.).

But I think that fields like %_playlist_total_time%, %_playlist_elapsed_time%, %_playlist_remaining_time% should be easy to implement and could be useful...