silaris: there always be kinda noise when I was playing .Sometimes it came out every few seconds,it's really annoying.
Run the game in Win 9x compatibility mode (right click on the '..\Divine Divinity\div.exe' file, select Properties and switch to the Compatibility tab), or set the game to run on a single core (start the game, Alt-Tab, right click on task bar and select Task Manager, in the Processes tab, right click on div.exe and Set Affinity, then uncheck all but one core).
See also
Sound issues? Sound crackling Occasional audio hitches in Divine Divinity If you don't want to run the game in compatibility mode, but setting the affinity works, you can create a shortcut to launch the game using a specific core, rather than having to Alt Tab each time.
Right click drag and drop the div.exe file to the desktop, or somewhere, and select Create shortcuts here. Right click on the new shortcut and select Properties. In the Target box, copy and paste the line below, so it is at the very start, followed by a space and the original path to the executable:
C:\Windows\System32\cmd.exe /C start " " /affinity ?
where the ? should be replaced by a number to determine which cores are used. With a quad core processor, for example, the values would be:
1 = CPU 0
2 = CPU 1
4 = CPU 2
8 = CPU 3
When you hit OK, the icon for the shortcut will be changed to that of the command prompt, but you can right click, select Properties and then Change Icon to switch it back.