PS3 media server audio quality

[hoogoosedmoose41]

for everyone out there who streams audio to their ps3 from their computer how do you like the audio quality? I have a 500 gb external usb drive connected to my computer that I use to stream my music collection to the PS3. I use WMP 11 and all the files are ripped as wav files. My thinking was that id get near cd quality sound saving them that way. Its a convenient way to have my music collection played however I notice that the music just sounds lifeless. the ps3 is sending audio to the preamp via HDMI and run the Integra in direct mode. if i switch to say all channel stereo its even worse. whats funny is I canplay an MP3 cd burned at 192 in my dvd player and it sounds a whole heck of a lot better than the PS3. is it because the DAC in the sony just isnt that good or am i missing something?
I also notice cds sound much better played through my oppo than the PS3