Found this and thought id share. \r\n\r\nDouble blind study done by McGill University on music - CD quality vs mp3 - Can a trained listener hear a difference?\r\n\r\nhttp:\/\/www.music.mcgill.ca\/~hockman\/documents\/Pras_presentation2009.pdf\r\n\r\nI know this topic probably has been debated to death.....but its a double blind study using reference equipment, speakers and an acoustically treated room evaluated by smart people. Just an interesting read to confirm what we already know. \r\n\r\nThe study suggested....No. At the highest quality available of either format, a difference could not heard but the studio engineers still prefered CD quality over the highest quality mp3 and the musicians couldnt prefer one medium over the other at the highest quality mp3 vs cd.