Bhagavad Gita, Chapter 5, Renunciation and Yoga of Works, Sanskrit and English
Sanskrit recitations and English commentary of Sri Aurobindo drawn from Sri Aurobindo's Essays on the Gita and Bhagavad Gita and Its Message
The USA editions of these books are published by Lotus Press
The recording features Sanskrit recitation by Sri Vinayak and English introduction and translations recitation by Santosh Krinsky. The recording was made in 1973 at Sri Aurobindo Ashram.
All introductory notes have been extracted from Sri Aurobindo's writings on the Bhagavad Gita from the sources noted above
More information about Sri Aurobindo can be found at http://www.aurobindo.net
An in depth review of Essays on the Gita is available at the daily blog http://sriaurobindostudies.wordpress.com