Here is the Download Link to Quicktime:
Quicktime Installer (Link to Apple QuickTime)
Here you can find an introduction how to install Quicktime correctly:
Here you can find an introduction how to use Quicktime for import and export in EDIUS:
Quicktime Installer
For some codecs in EDIUS 8 and 9, Apple Quicktime is necessary to be installed on your System. (The QuickTime importer option is no longer available for EDIUS X.)