Jacktrip on OS X
From CCRMA Wiki
This page describes how to set up Jacktrip on your Mac OS X machine for network performances.
Get and Install Jack
Find out about what Jack is here . It is essentially an application for connecting your sound card to 'Jack aware' audio programs like 'Jacktrip' with very low latency. Download it here http://www.jackosx.com. Unzip the download and install by clicking the Mac OS X installer package. Unless you know otherwise, just accept all the defaults for the install. You will be required to reboot your computer after the install.
jackd, the Jack application, will be installed here:
Jack itself doesn't have a graphical user interface, so it can only be used from the command line. But, see Qjackctl below for an essential GUI. JackOSX comes with a GUI called JackPilot. Best to use Qjackctl instead.