"You should remember the recent license issue about the legal imposibility to distribute cdrtools binaries under both CDDL and GPL, which led to a fork--namely, cdrkit.
"You might also remember I have no particular problems with CDDL, as it's a perfectly free license, as long as you don't try to mix it with GPL--remember, GPL does not mix with anything else: a GPL derivative must be fully under GPL too...!"