Well, I have been using this for several days now and think I can give a pretty good review of this for ya Scilor.
First off, it still works great. I like the continuous play based off of play list, just load up a bunch of songs and let it go to town. Streaming seems to be more consistent even in sketchy signal areas, I guess the buffer might be a little more robust in this version possibly? I did have a few failed to start song errors but it seems to be only happening on one particular artist though (hot chip) didn't really happen on anyone else really. The only other thing I would say is I have 2 suggestions for you.
1. Maybe have the first song you choose if you are choosing a song and there is not a playlist yet created start playing when you select it. Maybe you could do it with an "if/then" statement in the code.
2. Maybe use something other than a box to signify that the song was sent to the playlist, first time I used the app, i was kinda expecting to see or make a check mark happen inside the box, LOL.
But all in all, great upgrade from v2, and your definitely heading in a good direction with your app Scilor. I look forward to v4