Hello Dora, My home theater is Logitech Z5500 and for the blu-ray, My Z5500 decodes itself DTS / DD 5.1 streams. With the 2.5.0.5 Optical/coax in WASAPI my Z5500 decode correctly. it's indicated Dolby Digital and/or DTS on my z5500. But with the 3.0.0.0 and 3.0.0.1 my z5500 have no sound in WASAPI and in Directsound my z5500 decode in Dolby Prologic II not in 5.1/DTS
I tried to restart the program after changing the option and it does not matter . In Optical/coax and WASAPI mode I still have no sound on my home theater with 3.0.0.0 and 3.0.0.1 version.
thanks for your help