Steps to reproduce:
* Install Quod Libet (music player)
What should happen:
* Integrated with the PureOS desktop
What happens instead:
* Music controls do not appear in the GNOME menubar
* The close button quits the application and stops music (this is unusual for a music player)
Workaround:
* Enable plugin "MPRIS D-Bus Support" (adds music controls to GNOME menubar)
* Set "Hide main window on close" preference
Suggestion:
* Perform the workaround steps by default when installing the Quod Libet package
Next steps:
* Confirm default music app in PureOS (probably Rhythmbox)
* Confirm default behaviors in Rhythmbox, GNOME Music, Clementine
* Query QL upstream about defaults
* Recommend multi-DE multi-distro defaults (i.e. suitable for Debian)