static extern uint mixerSetControlDetails(IntPtr hmxobj, ref MIXERCONTROLDETAILS64 pmxcd, MIXER flags);
static extern uint mixerGetLineControls(IntPtr hmxobj, ref MIXERLINECONTROLS pmxlc, MIXER flags);
static extern uint mixerGetLineInfo(IntPtr hmxobj, ref MIXERLINE pmxl, MIXER flags);
static extern uint mixerSetControlDetails(IntPtr hmxobj, ref MIXERCONTROLDETAILS pmxcd, MIXER flags);