I've just bought myself a new RBPi 2B with a hifiberry digi+ board, installed everything, followed the installation & configuration instructions on the site/forum.
In my openelec 5.04 I've setup the audio output to point to snd_rpi_hifiberry_digi.
My JVC receiver is connected via TOSLink optical to the hifiberry, I see the red 'laser' light come out of the interface of the hifiberry.
Now the problem starts, when I play a movie I can see my JVC switch to DD51 or DTS depending on the audio stream within the movie coming from the RBPi/hifiberry. But there is no sound coming from my JVC/speakers.
Am I missing something? what is wrong, please help :-)
XBMC:~ # aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_digi], device 0: HifiBerry Digi HiFi wm8804-spdif-0 
Subdevice #0: subdevice #0
[ 3.824813] snd-hifiberry-digi sound: wm8804-spdif <-> 3f203000.i2s mapping ok
Raspberry Pi 2 Model B
HiFiBerry Digi+ Standaard