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2014/10/13 at 2:51 pm
#42181
Reading around it looks like a USB midi signal could be used alongside the iPad over ethernet.
If so then a simple “mute” button on a smartphone connecting to something like a Raspberry Pi (other cheap computers exist, particularly one you already have) could do the trick, given a Raspberry Pi on stage of course a simple footswitch on a GPIO pin could do the same job.