I have converted two .avi files on my MBP to the .iso file. Then I open up the two files and they become the Audio_TS and Video_TS folders. However, when I try and drag those to Toast, and try to burn the files, Toast always gives me an error. My question, how do correctly convert .avi files to dvd format so I can burn to a blank DVD? I want more than one .avi file converted to dvd format on each DVD. thanks.