I would like to know if it is possible to use the printed tiles (those with letters) from the 850425 set into the Lego Digital Designer (LDD)?

And if it is possible, the next question is "how" of course. :)
I would like to know if it is possible to use the printed tiles (those with letters) from the 850425 set into the Lego Digital Designer (LDD)?

And if it is possible, the next question is "how" of course. :)
No. It is not possible to add printed tiles in LDD. The closest you can get is just putting plates into the design and adding stickers.