THe Brasero web site states
can burn data CD/DVD on the fly
I hope that it means that UDF is used.
FYI, the latest download at the Gnomebaker web site is dated in June 2008.
I would guess that the project is dormant, or there is nothing else left to do.
Brasero's latest update is dated in June 2009.
I'll boot to ubie now, and see if I can find a way to use UDF wit Brasero.
I found no help in the downloaded files.
Maybe there is a built-in help?