I have a samsung shape M7. Play/pause will only resume if you leave it on the station. If you exit the station, or play a notification i.e. weather, that will clear the station and play/pause automation won’t work until you select something to play again.
To my knowledge yes, but only if it’s playback has cleared. For example I leave my basement one on a pandora station that play’s when I turn on the light downstairs, and pauses when I turn off that light. It works continuously Unless something clears the selection being played on the device.
Not that I know of, or at least not through the native ST app, It may be possible with some community created smartapps, but I haven’t looked into it too much.
If they sold a speaker that I knew would work with like this, I would buy it, but I haven’t really looked too far into it =D
I have only played with the published apps by ST in conjunction with the shape M7.