but if I change .avi to .wav and .wav to .ac3 tmgenc xpress 3.0 say buffer overrun detect so I convert my .avi into .mpg by using avitompeg converter then tmgenc can use again but problem cannot be solve yet, 1.why I cannot convert my .avi with wave and ac3files although I use www.doom9.org(avi to dvd topic) to help me? 2.my besweet and ac3machine that I download from doom.org have problem,my ac3machine become.... [bold]normal[/bold] [bold]problem[/bold] what happen, I download this program again but it still like that