Correct. You can add an ablum as a playlist, but to add al album to an alredy existing playlist you would have to do each song in turn... Or use the web app or desktop player which will allow you to do this natively.
Please use the search feature before posting a problem/bug/idea. What's a Spotify Rock Star, and how do I become one? Using Spotify Since March 10th 2009 Twitter: @mechanimal82