Have downloaded several files - are these legal??
but find that my Dvd player does not recognise most files - what do you mean? Have you burnt them to CD or DVD?? How?? What type of Disc?? This a DVD player or the DVD ROM in your PC??
should it recognise Mpeg if it recognises MP3 - Nope. Not necessarily.
most manufacturers promise you everything, until you've bought it - Rubbish!! Its usually in the spec or the hand book what is and isn't supported.