Look at the Code:
This is Flash, not Shockwave.
You won't help many people get it working if you tell them to install Shockwave, when what they really need is Flash
Originally limited to presenting vector based objects and images in a simple sequential manner, the newer versions of the format allow audio, video and many different possible forms of interaction with the end user. Once created, SWF files can be played by the Adobe Flash Player, working either as a browser plugin or as a standalone player. SWF files can also be encapsulated with the player, creating a self-running SWF movie called a "projector".
The file format was first created by a small company called FutureWave which was later acquired by Macromedia
and had one main goal: create small files for displaying entertaining animations. The idea was to have a format which could be reused by a player running on any system and which would work with slower network (such as a browser used with a modem).
Plugins to play SWF files in web browsers are available from Adobe for most desktop operating systems, including Microsoft Windows, Apple Mac, and Linux on the x86 architecture. Adobe claims that over 97% of web users now have an SWF plugin installed , based on an independent study conducted by NPD Research. Sony PlayStation Portable consoles can play limited SWF files in its web browser but this can only be found on the firmwares 2.71 and up. Nintendo's Wii console can run SWF files through its Opera browser.
A free software implementation of a SWF player is gnash, which as of 2007 is undergoing intensive development.