CDCollect is a CD/DVD catalog application for gnome.

It's goal is to be able to catalog your entire CD collection allowing for
searches of your CD/DVD files with a clean and simple interface. 

Features:

* Easy to use interface. 
* Allow the use of plugins (external programs) to collect information for
  each file of a CD in your catalog. 
* Searches can be performed on CDs or files in the collection. 
* It also catalogs compressed files
  (using external programs such as unzip, unrar, etc.). 

WWW: http://cdcollect.sourceforge.net