Open Windows sound recorder on button click

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C#

C#4.0

Hi,
I want to include a functionality in my application such that when the user clicks on a button, the user should be able to record the voice, and when stopped, the sound should be saved. Here's what I wrote for the Start and Stop button

int i=0;
private void button1_Click(object sender, EventArgs e)
    {
      Button btnStrtStop = (Button)sender;
      if (i == 0)
      {
        //Record code
        btnStrtStop.BackgroundImage = System.Drawing.Image.FromFile("RecordPressed.png");
        toolTip1.SetToolTip(button1, "Stop");
        mciSendString("Open new type waveaudio alias RecSound", "", 0, 0);
        mciSendString("Record Recsound", "", 0, 0);
        //Button3.BackgroundImage = System.Drawing.Image.FromFile(ofdButtonPicture.FileName)
        i = 1;
      }
      else
      {
        //Stop Code
string strAppDir = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetModules()[0].FullyQualifiedName);
        btnStrtStop.BackgroundImage = System.Drawing.Image.FromFile("RecordHot.png");
        toolTip1.SetToolTip(button1, "Record");
        mciSendString("Save RecSound" + strAppDir + "record.wav", "", 0, 0);
        mciSendString("Close RecSound", "", 0, 0);
        i = 0;
      }
    }

The problem I am facing is that the background image is not find the backgournd image for Start Stop button. I am not using the Open File Dialog but I have the two png files in the project directory itself.

For the play button, I have used

System.Media.SoundPlayer myPlayer = new System.Media.SoundPlayer();
myPlayer.SoundLocation = @"c:\file.wav";
myPlayer.Play();

I would have to load the file from the same path in the debug folder. how to specify that?
Also, unlike the previous code in the filename is constant "file.wav ", I want to provide a custom filename for each file we save.