For those who want to enjoy 7.1 Dolby Digital Plus or Dolby Digital 5.1 sound with tata sky +hd, plz do the followingBuy an AVR/DAC with Dolby Digital + decoder and a set of 7.1 speakers connect them to Tatasky +hd Box with HDMI cable only (use Coaxial and optical for upto 5.1ch) go to organizer-> User Settings->audio settings set Hdmi to Dolby Digital(if Avr is connected through HDMI) or Spdif to Dolby Digital(If AVR is connected with coaxial or optical). by this your 7.1 system(HDMI connection) has been setup but u will still get 5.1 sound because, not all contents are in 7.1 sound, so choose a movie which as per internet information says that has DD+ 7.1 sound like RAOne. 2nd and most imp thing the box supports 7.1 but the firmware in +hd box is still old and supports only Dolby Digital. to get Dolby Digital plus(7.1) the STB firmware has to be upgraded. I have already mailed tata to do that and I request all of u to plz ask tata sky to upgrade the firmware of STB to support Dolby Digital Plus along with Dolby Digital. Once they upgrade it, you will see the option of DD+ in Audio Settings along with DD and PCM. set it to DD+ to get 7.1 sound when a 7.1 content is shown. Click Here to understand better and ask questions about DTH and Home Theater installation..