M-AUDIO Delta 410 - Manual (Page 45)

5. In order to monitor the digital signal coming into the 410, switch to
the Patchbay/Router page of the control panel software. In the "H/W
Out 1/2" column, select the radio button named "S/PDIF In." This will
copy all S/PDIF input audio directly over to the analog outputs –
therefore in this example, the monitor mixer will be completely
bypassed. Once this assignment is made, you may play the DAT
material at any time and verify that it is making it into the Delta 410
successfully. This can be done regardless of whether or not your
recording software is open.
6. Within your recording software, select "S/PDIF In Delta-410," as the
audio input device. The Delta input appears as a stereo pair.
7. Start your software recording and then start your DAT material
playing. You should be able to hear the DAT material through your
sound system.
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