I want to echo the original post: "make it work like Rdio’s did"
What, we're five years in and no improvements in queue management?
I'll go years back and reiterate that:
1) there should be a way to "play next"
2) an "album," a "playlist" and a "song" should all be treated equally (e.g. if I have a queue already built, when I hit "play" on a playlist, that WHOLE playlist should play before the rest of the queue resumes, ditto an album, (it does this for a song). Five freakin' years without decent queue management. Shameful.