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Specify output device for multiple files in playlist

I’m running Windows 10 (10.0.19045.4170) which has the ability to forward sound from specific applications to specific audio devices (Settings -> System -> Sound -> App volume and device preferences).

I’m using SMPlayer (22.7) to play multiple files in its Playlist window (i.e. no saved playlist). However, since SMPlayer is merely a UI frontend for the command-line media player (in this case mpv), each time a new file starts the mpv process is restarted. This means the device setting gets reset for each new file in the Playlist.

How can I get the Windows setting of audio output device to be preserved across files in the Playlist?