I have two sets of headphones (a wired pair that my kids use when they use my pc to watch youtube & a wireless pair that they use on pain of death, aka confiscation of their consumer electronics) & switch between the two in windows’ sound settings.
It appears that LE is locking the sound device at game start & not respecting any changes made in windows during the game session. If I start the game with one device selected in windows (doesn’t matter which) the sound works fine. If I then change the sound output device in windows mid-session LE still sends its sound to the device that windows had selected at game start which doesn’t sound right (if you’ll pardon the pun).