No "adding" of albums, artists, genres to current playlist? Please?
Bit confused by what you are wanting?
Sorry, I think my use of "playlist" instead of "song queue" is causing the confusion. I'll rephrase.
Suppose I would like to add all the songs from Artist = Eric Clapton, or Album = 461 Ocean Blvd, or Genre = Classic Rock to the existing song queue that I have playing. How would I do that with your app?
Also, I'm just looking more closely at the landscape mode of the app (Soundbridge remote view) and I notice that it is missing the "+" key that would allow you to add content to the song queue.