is it possible to burn mp3 and some kind of video on a cd so that a cd player can play the music and a dvd to play the video files? any app?
mp3? cd? dvd player? What are those things you speaketh of?!
But seriously most old players will just not recognize a cd with two different file types on them or will try to play all the files even those they can't play and any newer players will have a menu that will tell you if it can read audio as well as video files.
Normal cd players will not play mp3,if they support mp3 they will also have a file selection so you can select the mp3s,same goes for any dvd player that can play video files that are not dvd video.
So the short answer is yes, if the players support it.