SPBStopRecording
long inRefNum; a valid reference number for a device
by the inRefNum parameter. The recording must be asynchronous for this call
specified in the completionRoutine field of the sound input parameter block ,
SPB, is called and the error field of that parameter block is set to abortErr. inRefNum must contain a valid reference number for an input device
noErr (0) No error
siBadSoundInDevice (-221) Invalid sound input device