PG.32 of your user manual shows the sampling frequency rate support ...
"32kHz,44.1kHz, 48kHz,64kHz,
88.2kHz,96kHz"
...did you try 88.2 and it didnt work? maybe its just an incompatability issue? Is there an option (button) on your reciever for higher bitsampling? from what Im reading, try putting your reciever on "straight" mode...does that do anything for you?