Sorry Pete but your Autoplay in Que and Playlists is a Can of worms at the moment, something is wrong but i cant put my finger on it.
OK let me try to explain.
With advance que OFF
Go to playlists, choose a playlist, click the Autoplay on all songs get chosen, now tun it off they get deselected, this is as expected put Autoplay on again.
Now play a song in the playlist, the lyrics screen pops up in my case and you have your song list to the left, now click on and off the Autoplay in the playlist mode you will see this has no affect on the playlist songs currently playing , THIS IS NOT WRIGHT.This should behave the same as in playlist mode with song not playing.
My feeling is that Queu Autoplay is allways controlling the Autoplay but i dont use queu i am always using Playlist mode and the Autoplay in playlist does not work as expected, Playlist seems to command Queu when it starts a song but it does not listen to manual switching command of playlist, this is Absolutely confusing and unusable if you are trying to use Playlist mode only.
Autoplay in Queu should obey all commands from everything that gets changed it should be a slave not a leader.
I will let you play with it some more thorougly before i give you more to think about because the way it is now does not work in a usefull manner.
I have played around some more to find out that the Autoplay button in playlist window only is not the same as the Autoplay button in Playlist song display window.
OK turn on Autoplay in playlist view only, now open song view and choose playlist now turn off the Autoplay then go back to the playlist view you will still see the Autoplay is ON, meaning the two buttons that are suppose to be identical are not operating in unison. I am baffled by how many Autoplay commands there are and they are all fighting each other. They should all be just doing what they say and nothing more or less.
OK narrowing it down now , its the Song View Playlist Autoplay button that wont trigger the playlist only Autoplay button while the other way around it works OK, i think thats the problem.
The Song view Autoplay button in playlist has a logic bug problem where it does not work as it should.