FLV movies don’t play

With IIS 6.0, Microsoft changed the way streaming media is handled. Previous versions of IIS did not require any modification to stream Flash Video. Microsoft IIS 6.0, the default web server that ships with Windows® 2003, requires a MIME type to recognize that FLV files are streamed media.

1. On the Windows® 2003 server, open the Internet Information Services Manager.
2. Expand the Local Computer Server.
3. Right-click the local computer server and select Properties.
4. Select the MIME Types tab.
5. Click the New... button
6. Enter the following information: Associated Extension box: .FLV MIME Type box: flv-application/octet-stream
7. Click Ok.
8. Restart the World Wide Web Publishing service.

(Issue solved thanks to Knutklo)