Play ogg files in iTunes / QuickTime

If you want to play .ogg music e videos files in iTunes or QuickTime all you need to do is:
- Go to the xiph page (the creator of the extension) at http://www.xiph.org/quicktime/download.html
- Download the component
- Mount the file
- Copy the "XiphQT" file to "Macintosh HD/Library/Components" directory
And that's it. Now if you restart your iTunes or QuickTime Player you'll be able to play .ogg files.