The click track in Pro Tools is a MIDI click and must be routed to a MIDI device in order to hear it. The click is NOT audio.

1) Connect your MIDI device to an external MIDI Interface via MIDI cables. MIDI Device MIDI OUT to MIDI IN on MIDI Interface. MIDI Device MIDI IN to MIDI OUT on MIDI Interface. (MIDI Interfaces are made by Midiman, MOTU, Emagic, etc.)

2) Create an OMS Studio Setup (verify synth modules are connected) Follow pages 9-11 in Getting Started with Mbox Guide.
In Pro Tools: Setups Menu > OMS Studio Setup. (If it says ?Please Find OMS: Double-click on Desktop > Mac Hard Drive > Opcode Folder > OMS Applications > OMS Setups). OMS must recognize your MIDI interface. Configure your MIDI devices that will be connected to the MIDI Interface.

3) In Pro Tools, double-click on the Metronome Icon on the Transport or follow step #4.

4) MIDI Menu > Click Options > Ouptut > Choose MIDI device to route the click to, channel 10 (Where drum sounds usually reside). Select ?During Play and Record?. Make sure the Metronome is highlighted on the Transport, which means the click option is enabled.

5) MIDI Menu > Input Devices. Verify that your MIDI device(s) is enabled in the Input Devices window. Verify that MIDI Thru is enabled in the MIDI Menu as well.

6) In Pro Tools > File > New Track > Create an Aux. Track, if your MIDI device is connected to the Mbox via a Source Input Jack. If your MIDI device?s audio is playing through an external mixer disregard this step. Because the Mbox only has two inputs, it might be more practical if the L & R audio outputs of the MIDI device are connected to an external mixer to monitor the MIDI device.

7) If the MIDI device audio output is connected to the Mbox: Select the Inputs for the Aux. track to reflect the Inputs used to connect the MIDI device to the Mbox. (ie. If your MIDI device is connected via 1/4" audio cables to Source Input 1 or 2 on the Mbox, select In1 or 2 as Input choice on audio track). Push up the volume on the fader of aux. track to hear MIDI device. If your MIDI device?s audio is playing through an external mixer disregard this step.

8) To set the Tempo in Pro Tools: MIDI Menu > Change Tempo > Type in your tempo in the BPM (Beats Per Minute Box) hit Apply. Or Deselect the "Conductor" on the Pro Tools Transport and type in the tempo for Quarter Note =120.00 BPM and hit enter.

9) Press Play on Pro Tools transport and you should hear the click track.