Sairam,
Here is the Link for the Sai Naam Dhun you asked for -
"OM SAI NATHAYA NAMAHA, SRI SAI NATHAYA NAMAHA" MP3 LINK -
Click Here - 08OM SAI NATHAY NAMAH.mp3 (http://www.4shared.com/audio/uyYeQmYj/08OM_SAI_NATHAY_NAMAH.html)
or
Go to - http://www.4shared.com/file/66125809/5c82723/08OM_SAI_NATHAY_NAMAH.html
Sairam,
rOhit beHaL