In article , wrote: >Not so, say audiophiles (readers of Stereophile will know what I'm talking >about). Many people say that BMG and Columbia House "club" CDs sound >different than the commercial releases of the same titles. Stereophile >did a bit-for-bit comparison of commercial CDs and club CDs and found >that, although the masters must have been identical (the comparisons >turned up no differences between the data encoded on club CDs versus >commercial CDs), the CDs still sounded different. It's not exactly clear >why that would be the case, but they suggested that differences in pit >shape might be one source of the sonic differences. It is now well established by top winners of the Nobel Prize In Audio Science that if you color your CDs green, their sound will improve. My own laboratory experiments at CMU's Laboratory of Urogenous Studies have revealed that application of thin ocher-colored fluid coating to my CDs just prior to playing them dramatically improves the soundstage effect of the CDs. Indeed, one of our graduate students is busy developing a simple at-home technique (using materials found in the smallest room of your house) which you may be able to use to observe this effect yourself. Even better, this material uses entirely organic, renewable materials, so it is eco-friendly, much like the digipack technology. I encourage readers to their own experimentation. One suggestion: drink plenty of fluids first.