Unable To Record Using M-audio Firewire 410 Options

[macphile]

Perhaps somebody can shed light on my problem here. I have
installed a Firewire 410 on a G5 (dual processor). The interface
seems to be working fine -- it is detected, and the audio
is routed to it (input and output). I am trying to record
an incoming SPDIF bitstream. The bitstream is correctly
detected (sample rate etc.). When I look at the sound
preferences menu, the sound input is displayed on the
bar graph in the Apple settings.

But, despite all this, I am unable to find any program that
can actually record the incoming bitstream. I have tried
half a dozen programs, to no avail. Spin Doctor 2 does not
even recognize the settings with Firewire 410.

I tried Audacity, Bias Peak, and a couple of freebie audio recorders.

I can playback the sound using my headphones connected to the
Firewire 410, but I am unable to record the bitstream.

Any suggestions would be appreciated!

- Sridhar