Really, all this talk of introducing "higher quality" digital music is the record companies looking for the next way to keep you paying for content you already

Really, all this talk of introducing "higher quality" digital music is the record companies looking for the next way to keep you paying for content you already own. I can even understand their fear. Until now every format has had a mass market lifespan of ~15-20 years. When people switched, huge numbers of 'library' albums would be sold providing a nice amount of income for very little work. It's hard to imagine people ever paying to replace existing mp3/aac tracks, and worse - you and I can give each of our children a perfectly reproduced copy of our entire music library.