Route MIDI events between your MIDI devices!
A simple command-line interface to the midimuxer library is included in the examples/cli package of this repo. To build and install it to your GOPATH, run go install github.com/acmanderson/midimuxer/examples/cli. Plug in some USB MIDI devices and run it, following the prompts to route MIDI messages between them. For example, route the input from one MIDI keyboard to multiple different MIDI outputs.