Are your not getting 5.1 sound?
Most popular media players should be able to play the core DTS track (1509kbps), did you try playing it in other media players like VLC?
Why do you think you are not getting true surround sound while playing that movie? Are there no sounds in surround speakers?
Have you checked your setup with some other movie? Man of steel has a lot of music content in the surround channels, so much that you may think that some one has wrongly wired the front channels to the surrounds
The ffdshow filter is converting the DTS track to PCM and theoretically this will not result in any loss of audio. Sometimes the overall volume might be slightly lower when using ffdshow filter. If your still have problems with other movies or 5.1 content then try disabling the ffdshow filter and let the player decode the audio.
VLC and PotPlayer work very well too. PotPlayer in fact is the best (IMHO). I have used Cyberlink PowerDVD in the past and no arguments against it... its an excellent player but nothing the free media players cannot offer or compete with.
Did you check if you picked the correct audio stream? HD rips often come with multiple audio tracks including 2 channel tracks.
Most of the DTSMA tracks get down sampled when you tray to get 5.1 analog out from sound card. So I tried following solution-
http://www.hifivision.com/home-thea...ng-lossless-hd-audio-5-1analoge-out-htpc.html
Also one suggestion,try MPCHC for prefect sound(no down sampling).
Also pot player analog out is good option.
Yesterday compared bitstreaming between XBMC,MPCHC and Potplayer,I can definitely say that Potplayer is best for Bitstreaming,MPCHC was second and XBMC is not outputting perfect sound.