Visit the RealPlayer page on the RealMedia website and click the RealPlayer Free Download button. Save the downloaded file on your computer using the Save window that appears. Allow the file to download completely. Open the folder where you saved the file and double-click on the icon of the downloaded file to start the installation wizard. Enter your email address and choose the location where you want RealPlayer installed. If you don’t choose a location the installation wizard will use the default location. Click “I do not accept” then “Agree and Continue” to every non-RealPlayer software it prompts you to install until you reach the RealPlayer installation, then click “Agree and Continue” and allow the installation wizard to install the software until you see a status message indicating that RealPlayer has installed successfully.

Download Real Alternative from the CNET website by going to the Real Alternative download page and clicking the “Download Now” button. Save the file in a location that you will remember on your computer and allow it to download completely. Close your Internet browser. This is an essential step to make sure that the Real Alternative installer does not conflict with your Internet browser. Double-click on the downloaded file to open it from its saved location. You will see a dialogue box appear saying that Real Alternative is being installed. Let the dialogue box remain on your screen while Real Alternative installs in the background. The dialogue box will disappear automatically once Real Alternative has been installed successfully.

Right-click on the RMVB file and then left-click on “Open. " Choose the option that says “Select the program from a list” in the window that pops up and then hit the OK button. Select RealPlayer from the list that appears in the Programs list if you want to use RealPlayer to play the RMVB file. Otherwise select VLC media player from this list to open this RMVB file with VLC media player. If you want to use Real Alternative instead you should choose Windows Media Player Classic from the list since that is the media player that supports the Real Alternative plug-in.