I have two avi files which are a film split in two and also two .idx, .sub files that go with them. I tried burning to dvd using ConvertXtoDVD3 and loaded the two avi files in and when pressed process it stated in the info panel at the bottom that the subs had loaded. The DVD files seemed to show that it had converted both files to make one film but on playback it gets to chapter 15 (halfway through film) and then restarts the film. I can join the avi files but don't know how to join the sub files. Or is there a better way of getting the end result.