Accord.Audio.Formats.WaveDecoder.Seek C# (CSharp) Method

        public void Seek(int frameIndex)
        {
            waveStream.Position = frameIndex * blockAlign;
        }

        /// <summary>
        ///   Plays the recorded audio stream.
        /// </summary>
        /// 
        private void btnPlay_Click(object sender, EventArgs e)
        {
            // First, we rewind the stream
            stream.Seek(0, SeekOrigin.Begin);

            // Then we create a decoder for it
            decoder = new WaveDecoder(stream);

            // Configure the track bar so the cursor
            // can show the proper current position
            if (trackBar1.Value < decoder.Frames)
                decoder.Seek(trackBar1.Value);
            trackBar1.Maximum = decoder.Samples;

            // Here we can create the output audio device that will be playing the recording
            output = new AudioOutputDevice(this.Handle, decoder.SampleRate, decoder.Channels);

            // Wire up some events
            output.FramePlayingStarted += output_FramePlayingStarted;
            output.NewFrameRequested += output_NewFrameRequested;
            output.Stopped += output_PlayingFinished;

            // Start playing!
            output.Play();

            updateButtons();
        }