there's a jumper to trigger it for use with an actual 1/4" microphone. that's been set, now - maybe for the first time. rtfm, right?
but, this is what i wanted, and isn't in the manual. i'm going to archive it here in case i need to find it later, and that page (dated to 2005-06-16, 14:32) disappears. but, it turns out that there's not much of use here.
JP2 - When jumpered, connects SPDIFIN#1 from a cascaded Digital I/O Card to the AUD_EXT header (back to the Live! card).
JP3 - When jumpered to DD (default), connects SPDIFIN#2 from the Live! Drive's Digital DIN header to the AUD_EXT header. When jumpered to CDB, connects SPDIFIN#2 from the cascaded Digital I/O Card's Digital DIN header to the AUD_EXT header. (I'm not aware of anything that even uses this input...)
JP4 - When jumpered to OUT0, sends the SPDIFO#0 signal (front-channels) to the CS8414 CODEC for the headphone output. When jumpered to OUT2, sends the SPDIFO#2 signal (front and rear channel mix) to the CS8414 CODEC for headphone output (default).
JP6 - The default position on my Live! Drive was to OPT/P_IN, which routes the incoming coax S/PDIF signal to SPDIFIN#1 on the AUD_EXT header. Moving the jumper to the RCA_IN position sends that signal instead. The RCA_IN signal appears to come from the CT4861 riser card, which hosts the optical S/PDIF and AUX I/O, and is found on the Live! Drive II.
for now:
