No DTS sound through Pioneer BDP-150K Blu Ray
I have a problem which is driving me crazy. I had a DVD player connected to my Yamaha Home Cinema and I got DTS sound with no problems (I had it connected with optical digital audio cable). Now, I have bought a Pioneer BDP-150K and since it doesn't have a digital audio output I had to connect it with HDMI. The problem is I don't get DTS sound (and I've tried to change may options from the set up menu from the Blu Ray Player). Can someone help me, please? Should I get DTS sound with HDMI or not? I tried to force DTS Sound changing inputs mode from the Yamaha Amplifier and I get the legend "DTS" in the AV but I get no sound.
Thanks in advance.