Sets number of audio tracks. Use this method to set number of output tracks in playlist before adding files to it.

Public Overridable Sub AudioTracksSetCount( _
   ByVal _nTracks As Integer _
) 

public virtual void AudioTracksSetCount( 
   int _nTracks
)

public procedure AudioTracksSetCount( 
    _nTracks: Integer
); virtual; 

public: virtual void AudioTracksSetCount( 
   int _nTracks
) 

et number of audio tracks
m_objMFile.AudioTracksSetCount(7)

//Set number of audio tracks
m_objMFile.AudioTracksSetCount(7);

//Set number of audio tracks
m_objMFile.AudioTracksSetCount(7);