ok i've just made a few dvd-r's from some divx-files. i started by using virtualdub to extract the audio (sampling rate: 48000). then i made a mpg out of it with tmpgenc, using the original avi-file and the newly extracted wav-file. i wrote this file using ulead moviefactory 2. i added some chapters, created a little custum menu using some pictures and mp3-music. all of this worked fine.
so the problem: when i play the movie, once in a while the sound shocks. it's kind of a scratching shock. it doesn't last long. and it happens about 15 times during a 1.30 hour long film.

anyone got an idea why i have this problem?

Ps: as to the settings i used. i just followed the divx to DVD-R guide on this website.