sbackup to DVD

[Sebastian Spiess]

hi all,

a while ago I installed sbackup and set it up. I think this link was the inspiration for this 
http://maketecheasier.com/backing-up-data-in-ubuntu-using-sbackup/2007/12/08

By now sbackup did perform his task very well.
As my free disk is getting less and less I was wondering how I can burn these files (tgz) to a DVD.

The only trouble I have is, sbackup runs with root rights and the folders where the backup files are placed within belong 
to root. should I GnomeBacker with root rights? should I change the owner of the files to burn them?

How would you guys do this ... this probably simple task.

thanks