M-Audio MicroTrack 1.4 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. This free Mac app is an intellectual property of M-Audio.
From the developer:
M-Audio MicroTrack contains drivers for the MicroTrack 24/96.
You may want to check out more software for Mac, such as M-Audio Key Rig, M-Audio FireWire Audiophile or M-Audio Fast Track C400 Control Panel, which might be related to M-Audio MicroTrack.