Well was not happy with the DAB conversion (Dabmotion) so had the dealer remove it for a full refund.
The sound was ok but it was not compatible completely with the Mazda system. See comments under previous post on memory stick/ipod.
If you are buying a new Mazda6 don't go for the conversion.
I note that the new Mazda 3 has a DAB radio, so I just missed it.