This software is under GPL but you should read the following clarifications: - You may not modify certain copyright messages in cdrecord.c See cdrecord.c for further information. - You may (with a few exceptions) not modify the location of the configuration file /etc/default/cdrecord. See defaults.c for further information. Please note that this is just the way I interpret the GPL and as this is my software, users should follow my interpretation of the GPL and not use their own different interpretations.