1 (edited) sound file: source
3 ambient_boom.ogg: sound/noises/Boom.wav
4 ambient_lonely.ogg: sound/atmosphere/ambient_lonely.wav
6 easteregg_asteroid.ogg: sound/player/insurrectionist/coms/taunt4.ogg
7 easteregg_door.ogg: sound/machines/Elevator_Up.wav
8 easteregg_message.ogg: sound/misc/shield_respawn.wav
9 easteregg_teleporter.ogg: sound/supernatural/Time machine test.mp3
11 object_exhaust.ogg: sound/machines/Big_machine.wav
12 object_light.ogg: sound/machines/Flourescent-Loop(Mono).wav
13 object_pipe.ogg: sound/machines/pipewater_loop.wav
14 object_spawnpoint.ogg: sound/ambient/transformer.ogg
15 object_turbine.ogg: sound/ambient/fan4.ogg