Just got a Rasberry PI 2 and I am running the latest release. When films are played they are only ever in Dolby Prologic and never in Dolby Digital 5.1 / DTS.
I have enabled pass through. Am I missing something ?
Check the KODI WIKI first.
You need go to kodi settings and first change the settings level to expert.
Once you there you will see the option for passthrough.
Hope this helps…