PlayCollapse01Sound event calls Server event ServerPlayCollapse01Sound
Server event ServerPlayCollapse01Sound calls Multicast event MulticastPlayCollapse01Sound
During Multicast event MulticastPlayCollapse01Sound, play sound for each player and stops right there
CAUTION: Default UE4 audio settings will give you false impression of sound to each client. You have to check the following audio setting to hear sounds correct way on all Clients including ListenServer: