Share MIDI information over a network in Audio MIDI Setup on Mac
Use the MIDI network driver to send and receive MIDI information between computers over a network.
For example, if you have a music studio with several computers connected to MIDI interfaces, keyboards, and synthesizers, you can use the MIDI network driver to route the data from those devices to and from your computers over an Ethernet network. Without the driver, you would need to purchase MIDI interfaces for your devices and connect the devices with cables. With the MIDI network driver, you can have a central computer act as a “master,” sending and receiving MIDI data over the network to other computers and their connected MIDI devices.
To set up MIDI networking on your Mac, you first create a “session.” A session identifies your Mac as a central location for MIDI streaming over the network. When setting up a session on your Mac, you specify the computer port that the network information will use, a session name, and your computer’s name, which will be seen by other computers on the network. You can also set up specific routings of MIDI devices. For example, you might specify that a MIDI keyboard connected to another computer route its MIDI data to a synthesizer connected to your computer.
In the Audio MIDI Setup app
on your Mac, choose Window > Show MIDI Studio.Click the Configure Network Driver button
in the MIDI Studio toolbar.To create a new session, click the Add button
below My Sessions.Below Session, on the right side of the MIDI Network Setup window, specify the network computer port and a Bonjour name (or network name) for your Mac.
On the left side of the MIDI Network Setup window, below Directory, click the Add button
and add the names, host, and ports of any remote computers (not on your local network) that you want to participate in the session, then click OK.Specify which computers can connect to this session by choosing an option from the “Who may connect to me” pop-up menu.
To start a session, click Connect.
Computers actively participating in the session appear in the Participants list.
To set up live routings, click the “Live routings” pop-up menus, then choose the devices you want to share MIDI information with.
To remove a session, select it below My Sessions, then click the Remove button 
. To remove a directory, select it below Directory, then click the Remove button .