Hi all, this is my first post! I've burned some avi to cd and they play on my home dvd player. I've burned the same files to a dvd-r, but the player says 'unknown disc'? I've also tried mp3s on a dvd-r and they don't play on the home player, but I know the player does play mp3 from a dvd-r because i have a disc from a friend that works. Does anyone know the problem? Thanks in advance. Stu.