K3B

Yes, there is a lot of CD/DVD burning software for Linux, though this is the best one by far. K3B is not only the best CD/DVD burning software on Linux, some of those who have used it even claim it's the best CD/DVD burning software for any OS.

From K3B's website: "K3b was created to be a feature-rich and easy to handle CD burning application. It consists of basicly three parts:

1. The projects:
Projects are created from the file menu and then filled with data to burn.
2. The Tools:
The tools menu offers different tools like CD copy or DVD formatting.
3. Context sensitive media actions:
When clicking on the Icon representing a CD/DVD drive K3b will present it's contents and allow some further action. This is for example the way to rip audio CDs. "

Run this command in your Ubuntu terminal to install K3B:

sudo apt-get install k3b

GnomeBaker

From Wikipedia's website: "GnomeBaker is a free CD/DVD authoring application for GNU/Linux and other Unix-like operating systems. It is part of the GNOME desktop environment. "

Run this command in your Ubuntu terminal to install GnomeBaker:

sudo apt-get install gnomebaker