My tv is mi tv 4(android) its not support surround sound for any channels or for any ott content apps sound so i bought airtel xtreme dth box and i have connected to my sony s20r home theater by using optical cable live tv channels are getting dolby sound out put but android apps giving only stereo sound this is just because my xtreme box adopting tv supported sound format automatically and no option for manual selection in its sound setting what i can do to get dolby sound for all android apps like prime netflix etc