well yet again the question of , why will my cdr`s not work ?
it is all down to the media u use only a handfull of brands work in dvd players ( laser wavelength & more )myself making audio cd`s and
converting dvd to vcd Verbatim/Mitsubishi make (and are the only ones that make) the dark blue type media (so called "Metal-Azo". In my experience, they are very good media. and work. never had one that dose not play in a dvd player yet ( ps £0.18p each )