Tut | Ambiance - JasXSL/GoThongs GitHub Wiki

Ambiance is set by floor descriptions, you only need to set floor descriptions on the spots where you want to change ambiance. Like at the entry and exit of a room.

SS$ra$0.5

SS means soundspace, ra is the sound, and 0.5 is the volume. You can see a list of all current sounds and additional methods here