[DllImport("winmm.dll", SetLastError=true)]
static extern TODO mixerGetID(TODO);
VB Signature:
<DllImport("winmm.dll")> _
Shared Function mixerGetID(<MarshalAs(UnmanagedType.I4)> ByVal hmxobj As Integer, ByRef puMxId As UInteger, ByVal fdwId As MixerFlags) As MMRESULT