Deleting the temp files after copying

- I tried using fs.rename. It does not seem to do the job. Maybe because I
  am on a windows system. Anywas, I am running out of time. So, I tried
  the other way - deleting a file after it gets copied using fs.unlink
Upload on stop recording

- Audio file is uploaded to the server upon recording. Seems like the
  buffer size cannot be extended beyond 116384 which limits me to record
  only upto 80 seconds of audio for 1 mb per 5 seconds.