Some windows users may require this package to make *.wmv output work with version 0.949 of zs4. In order to make this work do the following.

1. Install a zs4 for windows (v0.953 or later) on your computer.
2. Install this here redistributable windows media support on your windows computer.
3. Specify a file name ending with ".wmv" when exporting a video from a zs4 project.

Download the windows media support from MS by clicking here.