The sound seems to come from only one of the origins, while the light effect plays at all of the origins.
To illustrate: imagine a long path divided into 5 sections. At each transition is a pole with a lamp-model and an origin. On the mostleft, middle and mostright pole a trigger is attached. Kinda like so:
T_____P_____T_____P_____T
T= pole with origin and trigger
P= pole with origin
If I use the mostleft trigger and start walking towards the middle the sound just dies. If I walk back, it comes back. Afterwards, if I use the mostright trigger, the sound only comes from the mostright pole. Which seems strange as each trigger is connected to all origins and I can't really find a reason for this. Is there a limitation in the playsound function maybe? Because the playfx thing DOES work at all origins. It's not a BIG problem cuz if this doesn't work I can just play the sound "level-wide" but it would be a cooler effect if the sound was played at multiple origins as well

Anyways, thanks for all the help!! Much appreciated and learned a lot!