And . . .
what exactly is your problem?
The beefiness of your amplifier has nothing to do with bluray player settings.
Amplifier weight is not always an accurate assessment of power, because some designs are much more efficient than others.
Your BD30 can
only bitstream the lossless codecs. Therefore, set everything to bitstream.
If the bluray settings confuse you, I am worried about you just fiddling with a receiver. Bluray settings are very, very simple, and straightforward. Usually less than a minute, and you can forget about it forever.