Double clicking song functionality.

One of the recent updates changed the function of double clicking a song within a playlist for example. I used to be able to click on my Recently Added playlist and pull up my list of songs then double click one of them to add the entire playlist to Now Playing. Like many others I would like to be able to just double click the playlist title but the same functionality was achieved by double clicking a song. Now all that happens is the song I double click is added to the playlist. I have to manually select all the songs and drag them to Now Playing (annoying!). Anyone know how I can get it back to the old way? Songbird makes it so damn difficult to play playlists. I cant even drag a playlist into Now Playing.....I always have to select all the songs manually, amazing.