Thanks Gonk. I understand fully now. So the trick I suppose is to set the dvd player so that is passes through the bitstream unaltered, and let the 990 work with the DTS-ES. I'll try this as soon as I'm back up and running (redoing the theatre room right now).

Back onto this firmware update - Scott can you tell us if the latest firmware - 1 is available, in case I load in the latest and wish to roll back to what I had before?