Ok, a little more information :
If you want to use the virtualised sound on a multiplayer project, the server heard all the sounds (after leave the falloff radius) but not the clients.
The client enter in the audio’s radius, the music is hearded, he leave the radius , the music is not hearded and when he come back into the radius the music stay not hearded.
You need to use virtualised sound, annnnnd, i cant explain why, check the “Always play” checkbox in the class.