JohnTodd

Apple's push to increase the quality of songs distributed via iTunes has been formally realized in the company's Mastered for iTunes program—but does it really make music sound better?
After our original report on the Mastered for iTunes program, some readers were skeptical that anything could be done to make a compressed AAC file sound comparable to uncompressed, 16-bit 44.1kHz CD standard audio. Others believed users should have access to the original 24-bit 96kHz files created in the studio for the best sound. Finally, some readers suggested that few people can actually tell the difference between iTunes Plus tracks and CD audio, so why bother making any effort to improve iTunes quality?

http://arstechnica.com/apple/news/20...the-test.ars/1