For one thing, we may not know which file to double-click to install. Solve this by keeping an eagle-eye on the download action and jotting down the name of the file. Not only will you know which file to install, you can search for it by name if it doesn't appear where you think it should. Another difficulty is deciding where to install a plug-in. Plug-ins automatically want to install themselves in your browser's Plugin directory.
Installation is also where it's easy to confuse plug-ins and players.
Although we can't anticipate all the plug-ins and players you'll need, we can provide links to the most popular ones. The sites below all include good instructions on downloading and installation. It's wise to read them before you download. RealPlayer G2 RealNetworks, Inc. Plays audio and video files created with RealNetworks software. Inc. Plays multiple graphic, audio and video formats.