Lately, I've become more annoyed that the Sound Check feature in iTunes (4.7) and my iPod (3G) doesn't seem to do anything. There are still huge differences in the volume, whether listening on my Powerbook, or through my iPod. Trying to get to the bottom of it, I looked at Apple's support site and found this. Look at what Note 1 says: And, of course, all of my songs are in AAC format. If Apple is pushing AAC/MP4 so hard, then why don't they make the Sound Check feature work for those formats?? Any thoughts?