   winmm
  Does anyone know where I could learn more about mmsystem.h? I googled aroundbut I don't see any tutorials or anything similar, just the documentation.Thanks   
  The documentation for those API calls is here. I don't know where there are tutorials or anything like that; I mean I don't think they are deprecated or anything but it's been a long time since I thought about that part of Win32. An old version of _Programming Windows_ might cover the mciSendCommand routines; I'm not sure.   