[Ollo]

I'm not really understanding this report. Is AC3/DTS passthrough working with #0123?
Did it work better in #0120 (before the audio passthrough rework)?

AC3 passthrough over HDMI is working for me in #0122. I don't see any changed behaviour then in previous builds. DTS I can't test over HDMI but it still works passtrough using HifiberryDigi+.

Sorry, i'm speaking here about AC3 or DTS in 5.1 channel!

AC3 can also played with 2 Channels in Stereo. yes. work...but even not in 5.1,
You can take it from me, have tested builds #015, #019. #0120, #0122 and #0123

It is not a great help for me, if you are not able to test DTS5.1 or dolby'Digital in 5.1 on a multichannel Receiver.
I have also hifiberry on my second RPi2 - works fine with 2 channels ;-)

have a look to #1001 - all AUDIO features works here fine

Of course 5.1. What else?
Again I can only say it still works on build #0122. And sorry that my TV does not let DTS passtrough for this reason I use the Hifiberry.