First of all thank you very much for your help, it worked.
Because I had no sound at all trying to use Halion Sonic.
So, I have sound, but there is a but :

- BiaB plays a messy thing on channel 5 quite unstoppable,
just hitting the "panic" button, and many times...

- Halion crashed many times and was only playing when I was
using its window.

I think it would be much better to use the plugin version because
the CPU is very sollicited with the standalone verion.

And the last point is : I don't know how to do it.

So dear Jay (or anybody else) you're welcome to show me the way.

Thanks again for your time.

Duke