Sound : if you get no sound, first check your sound volume settings and the version of your Flash Player plugin; Firefox users type in your url location : about:plugins; Safari users click on Help and Installed Modules; Internet Explorer users, go to Tools> Internet Options, History> Parameters, Show Objects.
On osX : tested on FireFox 2, 3, 4, 5 & 6, Safari 2 & 3, Camino 1.5, Shiira 2.2 and Opera 9.2. (problems on IE 5)
On Win XP and Vista : tested on FireFox 2, 3 until 3.6.6 and IE 6 & 7.
On Linux : tested on Firefox 2. (other tests in progress)
All platforms : the project is better viewed by hiding permanent navigation bars and activating the fullscreen mode. The use of speakers is highly recommended.
Compatibilites : Flash 10
if you encounter any bugs or problem, please do post your issue here.