From Anders Waehlby:
iCDc is an internet enabled Audio CD cataloging tool compatible with iTunes 2 and 3. With iCDc you can download and edit information about Audio CDs as stored in the CD Info.cidb file also used by iTunes.
iCDc lets you export the listing to HTML, XML or any text format you wish. You can customize the export format entirely.
iCDc can download and submit Audio CD information from / to a database called freedb.