Yogaththin thaththuvam (INTRODUCTION TO YOGA PHILOSOPHY)
Mr V Srinivasan, Assistant Director - Sigiksha ("yoga therapists) of the Chennai-based Sri Krishnamacharya Yoga Mandiram, gave a lucid introduction to yoga philosophy, on 15th September, 2013 at Aravindh Herbal Centre.
You could download the audio file here. (File size: about 110 MB). The talk is in Tamil.