BTW, I agree with what wfaulk said. I mentioned compression because the sound recorded on current audio CDs is not the actual sound recorded. It's compressed, I believe by chopping out some high and low frequencies (similar to MP3, but significantly less). This is the reason we have the DVD Audio and Super Audio CD formats. They want to fill in all that missing data that had to be cut in order to fit on a regular CD by allowing more data to be fit on these new mediums.