In an effort to better understand the differences and similarities between CD audio and the various MP3 (lets use MP3 as a generic catch-all including AAC & Win.Media) compressions, I would like to toy-around with some of the software that can show things like clipping, the limits of range, etc etc.... I've only seen the line graphs of such a piece of software a few times, most recently involving a comparison of an Alison Krauss album in the different CD, SACD, and DVD-A formats. Sorry, but thats bout all I can say about a specific piece of software. So then: *Is there any such software available for free that will run on a Macintosh computer? (I'm only concerned with comparing CD & MP3 now... no need to be SACD/DVD-A compliant). Thanks in advance.