I have Nero 7 Ultra but I will look for 8. I just put the files onto a dvd as in drag and drop method. I will try burning them to a dvd. Maybe it will work. I have a phillips DVD player. It has worked with ripped dvd's before.
nero ultra is different than the vision express. Ultra i believe wont do dvds. Also do the other suggested. Check and see if the dvd player plays avi. The xbox 360 will.