Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X, using the W3C standard Scalable Vector Graphics (SVG) file format.
With Inkscape you would be able to easily create ready-to-print professional-looking physical dvd and cd inserts similar to the the ones below.
Just import the flat image files and the screen captured sales letter portion that are usually included in the resale rights packages into the software to create your ready to print cd or dvd inserts.
Note: The print quality produced would depend on the image resolution of the image file to be imported. The higher the image resolution the better the print quality of the CD and DVD inserts.