I've tried this edWatch (what does it stand for?) progie and it works for me:
1. Downloaded edWatch via eMule:
ed2k:
Edwatch%201.5.9.1068%20(Avi%20Mpeg%20Preview%20Utility%20For%20Edonkey%20-%20Gui%...0Avipreview).zip [322.8 Kb] [
Stats]
2. Downloaded AviPreview from here:
http://www.funkster.org/
(In the left frame goto "Software"->"AviPreview". There is a link highlighted inside the text in the right frame.)
3. Setup the tools as written here:
http://www.overnet.org/forum/viewtopic.php?t=1713
(It's in German. Translate it with
http://babelfish.altavista.com if necessary.)
After that it worked for me. The advantage of this method is that edWatch creates an AVI or MPEG video file that only contains the parts that you have already downloaded. No need of scrolling around to find valid video data.