DTS audio stopped working with recent media player update


Previously DTS audio worked on my appleTV for all video_ts folders I had.  Now with the most recent update I only get stereo out of the receiver in media player.  I enabled DTS in the settings menu of the media player and still no luck.  Here are my current stats

-Apple TV software 4.4.4 (3330)

-Sony STR-DE697 Receiver optical  hookup

-Media Player version 1.2

Please help this is driving me crazy.