WAF. sound files not working?? UE4

Hi Joey,
Thanks for your reply!
I’m very new to the engine so I wouldn’t be able to tell you what my concurrency settings are. Could you maybe explain where I can check that? I don’t think I ever changed these settings so I think they are currently still at default.
Also I use a .wav file that is 16 bit and has a sample rate of 44.1 kHz.
When my radius is 200 and my falloff distance 400 the sound doesn’t even work at all.
I tried it with both a sound wave and a sound cue.