1) In “Finder” open “Applications->Utilities->Audio Midi Setup”

2) From the “Window” menu click “Show MIDI Window” if its not already visible

3) Click the “Network” device

4) Start with these initial settings, select your iPhone/iPad and click “Connect”

- In some situations you may have to enter the name of your WiFi network in the box labeled "Bonjour name"

5) Once connected your device should appear under “Participants”, you can end the session by selected it and clicking “Disconnect”