M-Audio DMAN Manual page 48

Problem: A 3rd party Windows MIDI program does not play or record
MIDI to/from DMAN.
Possible Cause 1: You have not installed an optional wavetable
synthesizer daughterboard or you do not have a MIDI keyboard or
sound module attached to the MIDI interface adapter cable.
Possible Cause 2: The DMAN MIDI driver is not properly installed.
Install/reinstall all DMAN audio drivers (see Windows 3.1x Software
section).
Possible Cause 3: You have not selected the DMAN MIDI driver from
your application. Many 3rd party applications require you to select a
specific MIDI driver (because there can be more than one in an advanced
system) for use with the application. Select the driver named "Midiman
DMAN MPU401" as your MIDI driver. The manner in which this
selection is made is dependent on the application (each one is a little
different).
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