dvd or mp3

Hi all. Changing headunits shortly and I'd like to get some advice on a new motorised touch-screen, single-DIN with usual outputs/inputs. Needs to be DVD and Mp3 compatible with good audio reproduction quality. Will be the backbone of a full install I'm taking on. Thanks guys. Things...

Hi, I currently have an MP3/CD head unit and have all my music on CD's in MP3 format. To cut down on the 20+ CD's in my car, is there a head unit out there that plays DVD's but only for MP3 purpose. I'm thinking I can get quite a few albums on a 4.7gb disc. All I can find are one's that play DVD...