Today I created new Debian packages of the new beta release of DVDstyler (1.5b4) and the necessary wxSVG library (1.0b5).
You can install them directly via apt from the repository, hosted at sourceforge.net by adding this line to /etc/apt/sources.list

deb http://dvdstyler.sourceforge.net/repository/debian/ unstable testing

and install with

apt-get update; apt-get install dvdstyler