


If it is Apple MIDI aware only, you’re out of luck. In order to use one of those MIDI software solutions, your application must support Free MIDI, OMS, etc. The problem is that while USB MIDI adapters exist, Apple MIDI is not USB-savvy and the only way to use these adapters is with Free MIDI or OMS or some other third-party MIDI solution. But some users are able to get things working. It’s a pretty flukey setup to be perfectly honest. it only lets you pick between Printer and Modem port, no other ports will show up in a pop-up menu, etc.) you will have to tell the Keyspan to use Printer Port emulation and then set the Apple MIDI manager to use the printer port for MIDI communication. Because Apple MIDI does not support USB and it also does not support the Comm Toolbox (i.e. The best solution is to use an old serial port MIDI adapter, and then use a Keyspan serial port to USB adapter.

This is a problem-it can be difficult to get vintage MIDI apps to work on newer Macs which lack serial ports.
