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So I have upgraded my sound card and speakers. I used to have a sound blaster Z with Logitech Z 5450 5.1 surround. I Used an optical cable connected via SPDIF. I had both DTS and DOLBY digital displayed on my receiver. Which is exactly what I want. Now, I have upgraded my sound syetem to 7.1 surround sound and using Yamaha RX-v579 and I upgraded my sound card to ASUS xonar DX. I am using SPDIF connection in window 10. I have enabled Dolby live feature on PC drivers. There is sound but no "Dolby Digital" signal displayed. Sound does pass through all speakers but I want DTS and DOLBY DIGITAL on my receiver.