How to stop the sound from looping in Tourweaver virtual tour?

I am sorry Tourweaver 1.25 loops the sound by default. This problem will be improved in the next version of Tourweaver. At present some alternative solution is as follows.
-You can make a sound file with two parts composed, i.e., the requested sound + the silence. You can leave the rest part of the sound blank. So the sound will be played one time and then silence.
-For hotspot, you can add a fake sound hotspot with no real sound file included. Add "Stop Sound" as the hint for this hotspot. In this way you can use it to stop the sound.