As I mentioned earlier, I was planning on using the instructions at my-mania.com to hack the 2006 Target talking busts to create talking busts that move their mouthes to custom audio.
Well, long story short, I had a bit of trouble, but managed to work around it. I also noticed a few shortcuts in terms of accomplishing the hack. To see video of the final hack, and get some more info on how we worked around the problem, you can visit our talking busts page. If you want to do this hack yourself, you will still need to use the instructions at my-mania.