It appears that there are two parts to this bug: 1. failure to deal with config files written by older versions. Nuking ~/.config/Clementine then manually redoing all of your config makes Clementine at least continue and put its sound _somewhere_. Whether you'll actually hear something depends on whether the first device is something good or some crap like "HDA-Intel - HDA NVidia". I guess that, had I connected some HDMI TV or maybe a monitor with built-in speakers, I would hear something.
2. routing regression gone further -- 1.3.1 merely didn't provide GUI controls to select an audio sink but it still worked if set by an earlier version or by manually by editing the config file -- A MAP07 (Dead Simple) raspberry tincture recipe: 0.5l 95% alcohol, 1kg raspberries, 0.4kg sugar; put into a big jar for 1 month. Filter out and throw away the fruits (can dump them into a cake, etc), let the drink age at least 3-6 months.
