The 'Visualizations for Windows Media Player' page launches in your default Web browser. Scroll down the page, click the 'Download' link below the visualization to download and then click 'Run. As you mentioned, the problem is in Media Player Classic but you said the problem is in Windows Media Player in TechNet forum. Also, you said that the problem is the video paused but here you said the problem is about visualization.
You must provide an installation process for the user of your visualization. You must also provide an uninstall process for the user. The current version of Windows Media Player does not install visualizations from the user interface.
Installing to the Visualization Folder
It is recommended that you install all visualizations in the Visualizations subfolder of the folder where Windows Media Player is installed.
Registering Your Visualization
Visualizations are COM DLLs and follow all the normal rules of installation and removal. You can use regsvr32.exe or other installation tools to register your visualization.