LIVE 3-D: You can visualize the 3-D objects using the Live 3-D plugin from the Netscape site. URL: http://home.netscape.com/

QUICKTIME: Quicktime movies, animations and MIDI music can be seen and heard over the internet with this plugin. You can obtain this plugin from the Apple's site. URL: http://www.quicktime.apple.com/sw/

REALAUDIO PLAYER: You can listen in real time to sound. Obtain the player from the RealAuido site ($29.99). URL: http://www.realaudio.com

SHOCKWAVE: This program allows you to watch movies and sound. Obtain the plugin from the Shockwave site. http://www.macromedia.com/shockwave/download/