Hi,
The video gives you a tutorial how to replace the timing belt and the 3 drive belts of your Audi A4 (B5) having the 1.8l ADR engine with 5 valves per cylinder. In order do this job, the front of the car has to be in a so-called service postion. During the repair a broken radial sealing ring has been found. The video will also explain you these steps in detail.
http://www.youtube.com/watch?v=tZNm8uPG6Hc
The video has a German soundtrack, but English subtitles are added to YouTube. If you don't see them by default, watch the video directly at YouTube and press the subtitle button below the frame.
Enjoy it,
Jürgen