Thank all of you for helping. I looked at all these options and the Xantec IR router looks like the best choice for my application (coupled with the Sony AVR2100 remote). I can use the three macro keys on the 2100 remote to set the router channel for each TV then switch the amp to that TV all with one button press. The boss was impressed that I was able to come back so quickly with a solution to the problem. Again I have been doing this type of work for a little over 3 years and just happened upon this site. This is really cool.
Thank you