OK, now this makes sense. I like "queue" as the description, but there is one scenario that I don't like: 1.) insert playlist (i.e. more than one song), then 2.) search for song to insert. In this scenario, I have to wait for the whole previous playlist to hear the one song I just searched for.

Otherwise, the overall logic makes perfect sense. Since search only returns single songs, maybe it can be changed to truly "insert" instead of "queue"?

Oh, and I guess it would be cool if there were the options of 1.) Queue, 2.) Insert and 3.) Blend (where the shuffled playlist is distributed among the entire current playlist)

Is this worth of a wishlist item yet? ;-)