Import sound file in UE (only wav file, and PCM or some specific formats can be imported, convert them if not recognized by UE)
R click on the wav file, create Sound Cue
In Place actor, add a Trigger Box in the scene (when the character triggers it, sounds plays)
Select the Box trigger, open level blue print
Create the following 2 nodes:
Choose the sound cue file in play sound at location box