Massive Ambience and Sound Overhaul + Addition, Squashed Commit Edition

code/game/objects/effects/decals/contraband.dm

@@ -12,6 +12,8 @@
 	name = "rolled-up poster"
 	desc = "The poster comes with its own automatic adhesive mechanism, for easy pinning to any vertical surface."
 	icon_state = "rolled_poster"
+	drop_sound = 'sound/items/drop/wrapper.ogg'
+	pickup_sound = 'sound/items/pickup/wrapper.ogg'
 	var/serial_number = null
 
 	var/poster_type = /obj/structure/sign/poster