Hi, I have a Humax HDR Fox T2 connected to my Samsung LED TV via an HDMI cable. The Samsung TV is connected to a surround sound amplifier via an optical cable. If I watch BBC one HD on the TV the amplifier sees it as Dolby Digital. If I watch BBC one HD on the Humax the amplifier sees it as Dolby Prologic. (As a test, I temporarily connected the Humax to the amp using the optical cable and got Dolby Digital sound. I only have 1 optical input on the amp otherwise I would just connect the Humax directly to the amp.) My question is: Does the Humax transmit a Dolby digital signal to the TV through the HDMI cable? If it does, maybe I need to upgrade my HDMI cable to a higher version? If not, am I stuck with just Dolby Prologic sound from the Humax? Thanks, Martin.