Xiph QuickTime Components (XiphQT) are collection of QuickTime 'plug-ins' providing support for the xiph.org media compression formats.
Please see http://www.xiph.org/quicktime/ for more information.
Win32 Installation
Copy XiphQT.qtx file to the 'QTComponents' sub-folder of your base QuickTime installation directory. Typically it means:
C:\Program Files\QuickTime\QTComponents
Note
If you have installed on your machine the old OggVorbis component from
http://qtcomponents.sf.net/ you will need to remove it before installing XiphQT!
Possible locations of the OggVorbis.qtx file include: