Having been in this exact similar situation, I have used the Phoenix Gold ISM Speaker Selector. I don't see it on their web site but my distributor still has it in their newest catalog. It appears to be like Derrick's suggestion so there are some limited work- arounds. I would have chimed in earlier but somehow missed this discussion. I'm adding my 2 cents just for future reference.

- Dave S. -

You can never appease your ideologue opponents.