New Sounds for Emitters, Fire Alarms, Sparks, and Maintenance Ambience (#258)

* new sparks sound

* new emitter sound

* new maintenance sounds

* non-overlapping fire alarm sound

* volume tweaking

code/game/area/Space_Station_13_areas.dm

@@ -108,6 +108,10 @@ NOTE: there are two lists of areas in the end of this file: centcom and station
 						 'sound/ambience/ambimaint3.ogg',
 						 'sound/ambience/ambimaint4.ogg',
 						 'sound/ambience/ambimaint5.ogg',
+						 'sound/ambience/ambimaint6.ogg',
+						 'sound/ambience/ambimaint7.ogg',
+						 'sound/ambience/ambimaint8.ogg',
+						 'sound/ambience/ambimaint9.ogg',
 						 'sound/voice/lowHiss2.ogg', //Xeno Breathing Hisses, Hahahaha I'm not even sorry.
 						 'sound/voice/lowHiss3.ogg',
 						 'sound/voice/lowHiss4.ogg')

code/game/machinery/firealarm.dm

@@ -96,7 +96,7 @@
 		return
 	var/area/A = get_area(src)
 	A.firealert(src)
-	playsound(src.loc, 'goon/sound/machinery/FireAlarm.ogg', 75)
+	playsound(src.loc, 'sound/machines/firealarmshort.ogg', 75)
 
 /obj/machinery/firealarm/proc/alarm_in(time)
 	addtimer(CALLBACK(src, .proc/alarm), time)