I have a 1999/2000 vintage Onkyo TX-DS777 receiver (looking to upgrade soon however) and recently popped in a Blu-ray disc with a DTS HD Master Audio 2.0 soundtrack (it was Honeymoon in Vegas). My receiver recognized the DTS codec but the audio was only coming out of the left and right speakers. I had assumed the receiver would treat this like a Dolby Digital 2.0 soundtrack and decode a matrixed surround track using the Dolby Pro-Logic decoder but apparently not. What do mondern receivers do with DTS HD-MA 2.0? Can they decode the Dolby Stereo tracks from older movies that only have DTS 2.0 audio?