Adds the "set round end sound" fun button so admins can override the generic sounds to play something else if want be.

code/modules/admin/admin_verbs.dm

@@ -69,6 +69,7 @@ var/list/admin_verbs_ban = list(
 var/list/admin_verbs_sounds = list(
 	/client/proc/play_local_sound,
 	/client/proc/play_sound,
+	/client/proc/set_round_end_sound,
 	)
 var/list/admin_verbs_fun = list(
 	/client/proc/cmd_admin_dress,
@@ -158,6 +159,7 @@ var/list/admin_verbs_hideable = list(
 	/client/proc/check_words,
 	/client/proc/play_local_sound,
 	/client/proc/play_sound,
+	/client/proc/set_round_end_sound,
 	/client/proc/cmd_admin_dress,
 	/client/proc/cmd_admin_gib_self,
 	/client/proc/drop_bomb,

code/modules/admin/verbs/playsound.dm

@@ -36,6 +36,20 @@ var/sound/admin_sound
 	playsound(get_turf(src.mob), S, 50, 0, 0)
 	feedback_add_details("admin_verb","PLS") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!
 
+/client/proc/set_round_end_sound(S as sound)
+	set category = "Fun"
+	set name = "Set Round End Sound"
+	if(!check_rights(R_SOUNDS))	return
+
+	if(ticker)
+		ticker.round_end_sound = S
+	else
+		return
+
+	log_admin("[key_name(src)] set the round end sound to [S]")
+	message_admins("[key_name_admin(src)] set the round end sound to [S]")
+	feedback_add_details("admin_verb","SRES") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!
+
 /client/proc/stop_sounds()
 	set category = "Debug"
 	set name = "Stop Sounds"