Luc4000, I jsut looked on AMX website and they didn't have any serial commands listed for that model of Bose. What you may have to do is contact Bose to see if they have RS232 commands. Sometimes these ports are only for firmware upgrades. If they do have commands and you figure out how to manipulate them, you can use hyperterminal on your PC or laptop to send these commands. If you want to spend some money, you can go with a product named INLINE(which is now merged with Extron) called CTL208. It is an 8 button panel with a list of $490 I think. You can use the CTL208 to control the Bose via RS232 control. Each button can be programmed to send a different RS232 command such as power off/on, vol up/down etc..
The problem you may run into with Bose is that they may deem their RS-232 commands as proprietory and they may not give them out. We have ran into this problem with certain LCD projector brands.