Problem to hear sound in Java applet. Is there someone which success use in ivocalize
 

Hello

I have some website which use ivocalize but I can't hear any sound from it.

Linux isn't include in the supported platforms but it still base on Java.

How do I check if the problem is in Java and any other applet which use in Java can't make any sound?

Is there solution for that?
Is there someone which success use in ivocalize

I'm using Ubuntu 7.10 with Java 6 of SUN

Addition:
only the application with is "Java Web Start application" have the sound problem.
There is another Java application which is inside the page which the sound working good.
Unfortunately, The "Java Web Start application" is much more important.