JCE MediaBox is a Joomla! plugin that creates 'Lightbox' style inline-popups for images, internal and external content and media items such as Flash, Quicktime, Youtube, Vimeo etc. JCE MediaBox can be used with or without the JCE Editor.
Install using the Joomla! Extensions Installer -> Install JCE MediaBox
JCE MediaBox must be published / enabled in the Joomla! Plugin Manager after installation