Hai ragione in effetti ho dato una sbirciatina , ma non ho trovato nulla di rilevante! Nell'indice vi è la voce "ASPI drivers" dove viene però semplicemente riportato quanto segue:

"CDex needs ASPI drivers to work properly; you should have installed this on your system, because otherwise you cannot use the extracting of CD-ROM tracks.

Installing CDex (when you downloaded the ZIP file) is straightforward and easy. In order to install CDex, open the file Zip file with a utility like WinZip and extract the file to whatever directory you like (e.g. c:\Program Files\CDex). Once it has extracted, close WinZip, open a Windows Explorer window and select the directory where CDex is installed. Just double-click on the CDex.exe file to run it. That's all! Optionally you can create a shortcut to CDex -- but if you do, make sure though that you set "Start In" field to the directory where you have installed CDex.

Even easier is the installation from the CDexSetup.exe file. Just double click on the CDexSetup.exe file, and the setup wizard will guide you through the installation process."