i literally just converted a wav to wem in wwise, renamed it according to the music bank text file, and dragged and replaced it into Sid Meier's Civilization VI\Base\Platforms\Windows\audio. I know it worked because that audio is now silent in game, but my song is not playing instead. just silence.
I have no idea what publishing in wwise entails, and I do not have any lua related to this.
By publishing I mean build your music bank, or how is said, that then I believe you added correctly. Try to run playsound By lua. If not are you adding for a civ? You add at civilization. Artdef