These are the recordings dubbed for a feature to promote Swamiji's Message. As per the records available and cassettes released by HMV this is the voice of
SUBHEER GHOSH
http://www.youtube.com/watch?v=lxUzKoIt5aM
http://www.youtube.com/watch?v=ShrD0zjPGrs
http://www.youtube.com/watch?v=JntwFFlzecA&feature=related
http://www.youtube.com/watch?v=vuU20dnVbkg&feature=related
http://www.youtube.com/watch?v=cfSWa9bH1kY&feature=related
http://www.youtube.com/watch?v=Gryu_7zVIhg&feature=related
http://gdhar.com/2009/02/19/swami-vivekananda-1893/
There was only one recording of Swamiji’s voice with the Maharaja of Mysore. It was a phonographic record.
Swami Vivekananda’s speech was personally recorded by Nalvadi Krishnaraja Wodeyar in a Phonograph Cylinder (which was made of Paraffin and Wax) and unfortunately, it BURNT along with the earlier Wooden Palace which stood in the place of Amba Vilas Palace.
That recording which is being passed on the net is a prank. It is the rendition of various speeches at Chicago by Subir Ghosh . It might have been commissioned by Ramakrishna Mission and released by HMV