New Receiver for PS3 and Blu-Ray

[dobyblue]

Currently my PS3 audio is selected to (Optical) Dolby Digital 5.1, DTS 5.1, LPCM 2ch 44.1khz, LPCM 2ch 48khz. The LPCM's are pre-selected and I'm unable to de-select them. My receiver prefers the LPCM 2ch 48khz when I play a Blu-Ray...and I have to select Normal Surround sound manually.

That's the menu where you select the formats that you want to be allowed for Optical, the LPCM/bitstream option is in the settings menu.

You should have it set to "bitstream".