Not really clear what you did.
"When I get my DVD they are in .avi". What DVD, what is 'they'?
Then that mysterious 'they' is converted to .mpg and that doesn't play in your DVD-player. Why convert?
When i get my dvd they r in .avi so with a lall program called aura video converter they get converted to .mpg files The movie plays fine in PC (with sound) but as soon i put it in the dvd player there is no sound anymore??? Can somebody plz tell me what i do wrong?? Thanks x