Make a copy of the config file first. Then you just need to find a line starting with `DriverSound` in the client.cfg and replace its value in quotes. If this line is missing, add it to the end of the file. If anything goes wrong, overwrite the file back with the copy.
You can also use Ryzom installer to adjust the sound driver: https://app.ryzom.com/app_forum/index.php?page=post/view/199710
You can also use Ryzom installer to adjust the sound driver: https://app.ryzom.com/app_forum/index.php?page=post/view/199710