Just wondering if, when you check the Sound Check option in iTunes' preferences, does iTunes go and mess around with the actual encoding of each file? Or does it just adjust the volume slider for each file, and save that adjustment somewhere (e.g. the iTunes database, file headers, resource fork, etc.)? My guess is that it just tweaks the sliders and stores that info, meaning that if I check it, and don't like the results, I can uncheck it and get my current sounds back. Thanks for any quick thoughts on this. I did a search here and in the Help Viewer pages (yuck) and couldn't figure it out.