I have also Windows XP and have reinstall the game (like Raze mentioned earlier), but nothing helps!

I'm for sure the admin of my own pc!

The only thing that CAN be possible is to check if my PC have the last sound drivers.

But hmmm ... strange I will say ! Why work the music in the disc version well and not in the steam version? smirk

On 7th of february 2015 : I start a new adventure in the Divinity world of Original Sin,
it's a Fantastic Freaking Fabulous Funny ... it's my All Time Favorite One !