Hi All, I have been prepping a project for duplication, and the other night I started wondering (probably because it was REALLY late) whether there's any discernable difference in sound quality between AIFF and Sound Designer II files. I realize that they end up as AIFF on the CD, but Digital Performer allows me to export them in either format, and I believe Toast will load and burn either type of file. Kind of makes me wonder if there's a compelling reason to use SDII. I did try it once, and got some weird clicks on the CD when using SDII files - almost sounded like some digital clock issue. Any help would be appreciated. Nathan --------------------------------- Nathan Walker Walker Media Group walkermedia at iglide.net