Question : documentation for winmm.dll

hi -- i want to use pInvoke to output sound from my app (vs2008, C#, .Net 3.5). I have searched in a variety of places, including the most recent Windows SDK documentaiton, for a listing of callable functions in winmm.dll (and how they work). can you identify a documentation source?
i need this to work primarily with Vista, and secondarily with XP.
thanks.
Jim

Answer : documentation for winmm.dll

If you want output sound in XP you can use DirectSound or XAudio2. It also works for Vista but Vista has a new audio system, WASAPI. You can find documentation in MSDN:
http://msdn.microsoft.com/en-us/library/bb219818(VS.85).aspx
http://msdn.microsoft.com/en-us/library/bb633497(VS.85).aspx
http://msdn.microsoft.com/en-us/library/dd371455(VS.85).aspx

Good luck.