Seeing from the Specifications of the Sony DVD Player, DVP-NS67P,
I don't think it has the capability to play Dolby Encoded Movies.
It can only decode the movies encoded with DTS sound.
That does not mean it cannot play the Movies with Dolby Encoded Sounds.
Reading the DVD manual tells me that there is an option in the Audio Setup to downmix the Dolby Encoded movies to listen in your TV speakers/Home Theater speakers.
Download the manual in this page:
http://www.sony.co.in/support/produc...ite=hp_en_IN_i
Check pages 65 & 66 of the manual to understand the whole concept.
Make sure to
TICK/Select the following in the page before downloading
I have read and agree to the Terms and Conditions stipulated by Sony.
Lemme know if you have any other queries.