Stop Website From Embedding From Ng

[Injured-Ninja]

I recently finished a new game and had it sponsored with a primary sponsorship.
As permitted by the contract, I uploaded a brand-free, site-locked version to Newgrounds.
I'm also allowed to sell additional branded versions to secondary sponsors, as long as they're site-locked, and I'm relying on this as a major income channel for this game.

Today, I was shocked to discover that a sponsor, who previously wanted to pay me for a brand-free version locked to their website, simply embedded on their website the SWF hosted on Newgrounds. Apparently, site-locking as I know it, only regards the hosting domain, not the webpage domain, which makes it useless against anyone with even a tiny bit of brain.

How can I prevent this?
How can my SWF know the URL of the webpage in which it is embedded?

[Injured-Ninja]

A few more details:
I coded my game in ActionScript 3.0, using Flash Builder 4.5.
Also, I'm aware of ExternalInterface, but a person embedding an SWF can easily prevent it from interacting with webpage JavaScript.

[VicariousE]

Ask about this in the Programming Forum, or even in the Flash Forum... it's likely someone else has also run into this problem.

Try checking these out first... http://www.newgrounds.com/bbs/search/topic/embed