PS3 and 7.1 Matrixing Bug?

[krizzz]

I just came across a pretty serious limitation using a PS3 as a primary BD player. I have seen this posted on the Sony forum (without any good responses), so I will quote another poster directly, rather than try to explain it (far more poorly):

What the PS3 currently does is:

* I play a 5.1 Channel PS3 game and I recieve 7.1 Channels of MPCM at the receiver. Only 5.1 Channels have sound playing but I am unable to process Dolby PLIIX because the RECEIVER sees 7.1 channels of MPCM signal. The Source media is 5.1 and the PS3 is outputting 7.1 MPCM
* I play a 2 Channel MP3 audio file and I recieve 7.1 Channels of MPCM at the receiver. Only 2 Channels have sound playing but I am unable to process Dolby PLIIX because the RECEIVER sees 7.1 channels of MPCM signal. The Source media is 2 Channel and the PS3 is outputting 7.1 MPCM
* I play a 2 Channel Divx or Xvid movie and I recieve 7.1 Channels of MPCM at the receiver. Only 2 Channels have sound playing, but I am unable to process Dolby PLIIX because the RECEIVER sees 7.1 channels of MPCM signal. The Source media is 2 Channel and the PS3 is outputting 7.1 MPCM

The PS3 is capable of outputting only 2 Channel or only 5.1 MPCM if you manually disable all the other options. So it isn't an issue with my Receiver. It even works normally with DVDs and BluRays.... Clearly the PS3 is capable of switching between the Audio output formats automatically...

Just not when playing MP3s, DIVX Video or PS3 Games..."


Any gurus have a fix for this?