Apple HD trailer links are broken again. I currently don’t have time to look too deep into the issue, but from a quick analysis, it looks like the domain
www.apple.com has blocked out all access movie trailers. You may recall that the solution that bypassed the QuickTime user agent check was to change the domain
www.apple.com in the url.
The current workaround is back to setting the user agent and using the
movies.apple.com domain. For more information about the workaround, please read Direct Download Links from Apple Are Not Working.
Remember in order for the workaround to work, you have to change the domain from
movies.apple.com, if it’s not already correct.