Background Audio Cool Trick

Hi everyone!

I am making an interactive video manual, where speaker says some words, what the learner should do, some special extra things etc., then video pauses and user should do what he/she was told to. I need a background music to work even when the video is stopped. And I can do it, BUT I need the background music to stop somehow when I need it to stop and I have no idea, how to do it.

Here are some of my thoughts:

1.I have created a variable 'VideoFinished' in SL, that changes its value once user completed the necessary task. It's initial value is 'no', once user double clicks the first hotspot it turns to 'yes'

2. Added trigger "Execute Javascript when timeline starts on the slide"

3. JS is supposed to take the variable 'VideoFinished' from the course and use it as a condition whether to play music or not.

If I do not use any conditions on JS, audio is playing fine, it is looped, volume is adjusted.

However once I add a 'while' to JS, no audio is played at all.

Can someone please let me know, what am I doing wrong? Here is JS, var video - is a variable in JS that should be equal to the 'VideoFinished' of SL:

var player=GetPlayer();
var video=player.GetVar('VideoFinished');

while (video=no) {
var audio = new Audio()
audio.src = 'story_content/5kxW8RMEV8D_44100_48_0.mp3'
audio.play ()
audio.loop = true
audio.volume = 0.5
}