These instructions are mainly for my own personal reference and should not be considered a supported feature of Sonic Pi. For experimentation only. Assumes OSX 10.10
- Setup a virtual midi channel on OSX
This is sometimes referred to as a "loopback" device and it should allow the various software applications to communicate.
- Open
/Applications/Utilities/Audio\ MIDI\ Setup.app/and go to "Window > Show MIDI studio".