Closing Banshee window leaves sequencing player and pulseaudio running through track library
Banshee 2.6.2, Linux localhost.localdomain 5.3.7-200.fc30.x86_64 #1 (closed) SMP Fri Oct 18 20:13:59 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
close the window with the x in the top-right corner and the window goes away but the audio continues, and continues on to the next track
"killall banshee" is not enough to make it go away, "killall pulseaudio" finishes the job
banshee was started by doubleclicking a video in a nemo window, the continuation is the most recently played previous video