I read that story about the teens and hearing on Comcast, I'll try to dig up a link. Does lossy compression affect the sound of AUD's (more diffuse, random sound) more than SBD's and studio recordings? I can definitely hear a big difference in the 24 bit shows I have heard vs. 16 bit. Also, I hear the biggest difference in sound quality when I listen to vinyl vs. CD, so I don't think it is my ears (I hope). I found a hearing test 20kHz tone FLAC file on the archive, listened to it and couldn't hear a thing listening through my cheap soundcard > $50 cans.