Method used to extract from youtube video.
Please use the official youtube link1 youtube link2, if you wish to share it online.
Update: Updated with new link by including 2 extra BGMs (link 1, link 2) released by ThinkMusicIndia in their Youtube channel. This one not released in iTunes.
This is just a Youtube extracted version.
For better quality, buy legally from iTunes.
Link : http://bit.ly/JigarthandaOSTiTunes