The reason we ask about the system because some people uses optical from PS3 to connect to their receiver, which will mean all audio will be lossy and the 5.1 PCM track will be downmixed to stereo. Or set to bitstream when using HDMI which will downconverted to lossless core DTS/Dolby Digital only.

Laowai, looks like your system is in a good setup. I'm surprised that you couldn't tell the difference.

To me the difference is so huge, I'm not buying any BD without a lossless track. More details, accurate imaging, directional, wider soundstage, deeper and more charasteristic LFE. Example, when a glass shatters on the floor, you will hear the pieces bounce 5 times on lossless track, but on lossy, you'll probably only hear 4 times, due to compression. That is why the track is called lossless. Exact duplicate of the studio master.

I did a blind test on my own using Casino Royale between the DVD and BD, the music on the opening Columbia Pictures montage itself already giving me goosebumps. I'll say again, the difference is huge.