When using say3D with the offset parameter if offset is larger than 10 the sound does not play and the audio object ceases to exist.
I suspect this will happen with all the sound commands that have the offset param, but I have only tested say3D.
This one will play the sound
cursorObject say3D ["Track_C_01",10,1,false,9.9];
This one will fail
cursorObject say3D ["Track_C_01",10,1,false,10.1];