This will work if the powers that be agree to allow input -> input connections. If not, there is another way. In a hardware mixer, many-to-one connections always require a bus, which is nothing more than a unity gain summing node. Since jack performs unity gain summing for a many-to-one connection, then the buffer that the sum is written to could be redefined as a bus. Then any client could read from the output port of this bus. I am not necessarily in favor of this, nor am I against it. I don't know enough about coding to have an opinion either way. What I do know is that this approach preserves the output -> input semantics. Tom