I wonder if anyone can help me? I have a Synology NAS which services two separate Pioneer amps. One in a bedroom, and the other in the living room. The problem is that the one in the living room will not play certain PCM/DTS files. I have a copy of Black Rain (amongst others), which plays perfectly in the bedroom but not in the living room. Living Room Setup: Pioneer SC-LX97 receiver Dune B1 Smart media player nVidia TV Bedroom setup: Pioneer VSX-529-K Dune D1 Smart media player Raspberry Pi2 (Kodi OSMC) I should add that the files that present problems are old files, done at a time when I used to PCM almost everything. I haven't done this for some years. Files from that period that were Dolby sound play perfectly. I have checked that both systems are setup identically. I have tried both bitstream ( normally used), and PCM decoded at the Dune end. Makes no difference. Can anyone advise please? PS the sound I get is a loud hiss, which I assume means no decoding is taking place at the receiver end. I am assuming this is a receiver issue, as the output is the same on nVidia and Pi2.