Retrieving Audio Record Samples 
This tutorial describes how to retrieve the number of samples used while recording audio. 
 Call the 
CMMFDevSound::SamplesRecorded() query function to find out the number of samples that have been recorded.   This returns the number of samples recorded since the last 
CMMFDevSound::RecordInitL() call.    Note: The 
CMMFDevSound::SamplesRecorded() query returns a zero value until the start of the recording cycle. The count of samples recorded is returned in the recording and paused states.