I heckin' did a music. As far as i can tell i implemented it properly, testing it out has been finicky as all hell. I figure if i did a goof, the Reddit method of giving the wrong answer first so someone replies with the correct one will work.

code/game/area/Space Station 13 areas.dm

@@ -104,7 +104,7 @@ var/list/ghostteleportlocs = list()
 	power_light = 0
 	power_equip = 0
 	power_environ = 0
-	ambience = list('sound/ambience/ambispace.ogg','sound/music/title2.ogg','sound/music/space.ogg','sound/music/main.ogg','sound/music/traitor.ogg')
+	ambience = list('sound/ambience/ambispace.ogg','sound/music/title2.ogg','sound/music/space.ogg','sound/music/main.ogg','sound/music/traitor.ogg','sound/ambience/serspaceamb1.ogg')
 	base_turf = /turf/space
 
 area/space/atmosalert()

maps/southern_cross/southern_cross_areas.dm

@@ -122,7 +122,7 @@
 	flags = RAD_SHIELDED
 
 /area/surface/cave
-	ambience = list('sound/ambience/ambimine.ogg', 'sound/ambience/song_game.ogg')
+	ambience = list('sound/ambience/ambimine.ogg', 'sound/ambience/song_game.ogg', 'sound/ambience/serspaceamb1.ogg')
 
 // The bottom half that connects to the outpost and is safer.
 /area/surface/cave/explored/normal