I have 48 Mb wav file, so i need to work with streaming buffer, but i didb''t find any good explanations, even from DirectX SDK. Some body can explane how to work with large wav files, i really won''t to load it in RAM ? I know, that can be buffer a part of this file ! Please Help ! Please replay to e-mail: cryp@remteks.lv too !

Check out:
http://msdn.microsoft.com/library/techart/msdn_streams3.htm

And more generally:
http://www.microsoft.com/directx/overview/dsound/default.asp

Hope this helps you out!
-ns