Step 1: Setting system audio Passthrough : Into SETTINGS: Sound>>Enable Pass Through(Audio output to AUDIO_HDMI) Display>>hdmi output change to HDMI 1080P24Hz (If the video is 24Hz, like Blu ray sources doesn't need to set, the system can automatically identify and switch ) KODI Zidoo VideoPlayer IF you use the zidoo local video player it doesn't need others settings, just enough. Of course,if you want to show your program with KODI,you should set KODI audio passthrough. Step 2: Launch kodi System>>Settings>>System: change the Settings level to Expert Step 3: Go on setting the Audio output: change Number of channels 2.0 to 7.1 Check Enable passthrough、Dobly and DTS capable receiver Step 4: When playing a video ,change the Audio stream and all settings will be ok.