Windows Media Player
The Windows Media Player allows you to play Windows Media, .avi video, and .wav sound files. The latest Windows Media Player can be downloaded free from Microsoft.com:

RealPlayer
To listen to RealAudio or view RealVideo, you'll need the latest version of the RealPlayer. The latest Real Player can be downloaded free from Real.com:

QuickTime
Apple offers the movie (.mov) viewer QuickTime which is needed to view movies in the .mov format. We recommend downloading this free from Apple:

Flash
Flash is required for certain features. We recommend downloading this free from MacroMedia:

ShockWave
You'll also need ShockWave to run certain features. We recommend downloading this free from MacroMedia: