Hi, I just received my TBS1910 v2.1, and updated it to Matrix 1.0.9. I have setup XBMC to passthrough SP/DIF optical to my Logitech Z5500 receiver ( DTS/AC3 decoder ). When i play stereo content like MP3, it is OK. But when i play AC3 or DTS movie, my amplifier tells me i'm receiving stereo content,...