Topic on Talk:The Last Remnant
I tried editing the INI file but, after closing the game, "DeviceName=" reverts to "DeviceName=Generic Hardware" and goes back to having just stereo audio. I haven't yet tried setting the INI to read-only. I did add the game to ALchemy and that permanently corrects the problem. The game uses Miles Sound System, which of course seems to use some screwy combination of DirectSound and OpenAL so it responds to DirectSound restoration software.
Need other people to verify the INI file reverting.