Auto add tag onto Amazon links

[marklcfc]

Using media tags on 3.4 I was able to achieve this, when someone posted a link to an item on Amazon it would include my associates tag.

can someone please create this for ips4. I  purchased the media tags for 4.0 hoping it would do the same and it sort of works unless 'display as a link instead' is clicked, then it just ends up removing the tag it just added 

 

Alternatively is there a way to stop the editor saying display as a link instead for this instance?

[Flashbax]

I used this one and added link to JS from the global template http://petewilliams.info/blog/2009/07/javascript-amazon-associate-link-localiser/