Detecting when application is playing sound

I need a DLL detects when an application plays sound and when it stops. Inside the DLL you should have a function with a boolean parameter which will be called when sound start/stops, keep in mind that I don't care about what plays, I don't need to capture the playing stream, ONLY to know if it plays or not. As far as I know there are three ways to play sound: 1. [login to view URL] 2. Direct sound (directx) 3. Winapi The DLL can use MS detours but not do any core DLL replaces or any commercial hooking/detouring beside detours (since I'm licensed to use it), to test your DLL you can inject it or use appinit_dll flag, I already have an injector so I don't need an inject code. Code should work on XP through 7, 32bit only and be compiled on VS2005 and above. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Win32