Thanks for the replies but I am looking for further help.
I am using the LOTR Extended Editions as a test disc, as I have just purchased a pair of rears to utilise my amps 7.1 capabilities. When I am playing the discs via my PS3 set to Bitstream through the HDMI the amp is flagging the DD EX and DTS ES signals. When I am playing the discs through the 3910 with the HDMI set to NORMAL (Bitstream) these do not flag.
Any ideas? Is the 3910 capable of recognising these sound formats or outputting them via HDMI or digital coax?