Research on sound and the use of sound to produce good feels all over the [i]New Hope[/i] is probably a thing, but that'd be part of their atmospheric adjustments in general. You know: lighting that relieves stress or helps you focus on your task, whichever is necessary given the room; music which calms the mind; smells that help you relax; etc. That's one of the ways the Namilee are coping, certainly.

Using sound as a weapon would work on land, but as it'd be totally ineffectual in space... Yeah. They might end up weaponizing sound, but for now they're sticking with electromagnetic and kinetic forces, things like that.