If you try to view a video and your computer asks you if you want to install a new codec, first check your security settings before selecting "Yes."

In Internet Explorer, in either the View or the Tools menu, find the "Internet Options" dialog box and open it. Click the "Security" tab in this window. Make sure that your security setting for the Internet Zone is set to "Low" before installing the new codecs.

If you select "Yes" to add a new codec, you must reboot your system for the new codec to function properly. If you installed a new codec, but did not follow these instructions, you might now be having problems. If you are having problems after installing a new codec, please go to http://www.microsoft.com/windows/windowsmedia/en/default.asp.

Simply download the software and install it. When installation is complete, reboot your system. You should then be able to see and hear all the music videos properly.