FileInfo.com - The File Extensions Resource

.CD2 File Extension

File Type	Click'N Design 3d File
File Format	File
Common?	No
File Description	Disc label created with Click'N Design 3d, a CD and multimedia labeling program; may contain both graphics and text saved within the CD label template; can be applied to a CD using Avery's CD Stomper.
Program(s) that open cd2 files	Mac / Windows: Avery Click'N Design 3d

Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/cd2