http://www.gnome.org/projects/brasero/

GNOME向けのCD/DVDライティングツール。機能は以下の通り(READMEから転載)

Data CD/DVD:
- supports edition of discs contents (remove/move/rename files inside directories)
- can burn data CD/DVD on the fly
- automatic filtering for unwanted files (hidden files, broken/recursive symlinks, files not conforming to joliet standard, ...)
- supports multisession
- supports joliet extension
- can write the image to the hard drive
- can check disc file integrity

Audio CD:
- write CD-TEXT information (automatically found thanks to gstreamer)
- supports the edition of CD-TEXT information
- can burn audio CD on the fly
- can use all audio files handled by Gstreamer local installation (ogg, flac, mp3, ...)
- can search for audio files inside dropped folders
- full edition of silences between tracks

CD/DVD copy:
- can copy a CD/DVD to the hard drive
- can copy DVD and CD on the fly
- supports single-session data DVD
- supports any kind of CD

Others:
- erase CD/DVD
- can save/load projects
- can burn CD/DVD images and cue files
- song, image and video previewer
- device detection thanks to HAL
- file change notification (requires kernel > 2.6.13)
- a customisable GUI (when used with GDL)
- supports Drag and Drop / Cut'n'Paste from nautilus (and others apps)
- can use files on a network as long as the protocol is handled by gnome-vfs
- can search for files thanks to beagle (search is based on keywords or on file type)
- can display a playlist and its contents (note that playlists are automatically searched through beagle)
- all disc IO is done asynchronously to prevent the application from blocking

長々書いてますが使い方は至ってシンプル。KDEにはk3bがあるのにGNOMEには無いのか? とお嘆きの方にお勧め。k3bほど多機能ではないですけど(今のところビデオCDやビデオDVDへのエンコードはできない?) ogg、mp3からの音楽CD作成・動画とかのプレビューをするには、それぞれに対応したGstreamerのコーデックが必要です。