Switching the audio output takes effect without a reboot
Changing a screen's audio output between HDMI and the 3.5mm jack in the dashboard now applies right away, without restarting the player.
Change "Audio output" under Screens > a screen > Settings, between HDMI and the 3.5mm jack, and the sound follows right away.
Before, the setting saved but the sound stayed where it was until the player restarted. A lobby screen that needs its sound sent to the room's amplifier instead of the display is now a setting you change and walk away from.