eSpeak speech synthesizer not working in qwebview

[Javenne]

I have a problem to make eSpeak speech syntesizer working in a qwebview window.

I tried the demo html page provided here in mozilla and it works fine.
But when I try to open the html demo page in a qwebview window, the synthesizer doesn't work.

Anyone can give me an idea how to fix this?

I'm using Qt 4.7 in Ubuntu 11.10 with a HP mini 2101.

Thanks in advance.