Load one physical CD, get two icons on my desktop

I know all this Sony rootkit/DRM stuff has made me paranoid. I loaded my Sarah McLachlan CD into my Mac (a single CD), and two different CDs appear on my desktop (see the screenshot on the left.) One apparently is the music aspect of the CD and the other is the computer aspect of the CD. Look inside the former, and you see a bunch of AIFF files. Look inside the latter and you see a folder structure, including two executables! Probably totally innocuous, right? Wait the CD is from Arista records. Any connection to Sony? Is it loading a rootkit?I dunno. Paranoid. Technorati Tags: mac, sony, rootkit