Roland Edirol UA-25 Owner's Manual page 58

Troubleshooting
Can't record/play MIDI
Have you correctly specified the MIDI device you want to use?
In order to record/play MIDI tracks via the UA-25, you must install the UA-25 driver
correctly (➔ "Driver installation and settings" (Windows, p. 14 / Mac OS, p. 32)).
You must also specify the MIDI device that you want to use with your software. For
details on this setting, refer to "Driver settings" (p. 26), "Input/output device
settings" (p. 34), "OMS settings" (p. 38), "FreeMIDI settings" (p. 41).
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