Really easy to make your own SPDIF coaxial connector and cable. Use a spare CDROM audio cable (everyone has plenty they don't use, right?) and cannibalize it for parts. Get a coaxial bulkhead connector from Radio Shack. Drill a hole in a blank spoon and attach the connector there. Solder wires to the connector from the spare cable. Wire center to + and outside to ground (check mobo manual for pinout). The patch cable to receiver should be 75Ohm coaxial with RCA ends, but I've seen it work on crappy patch cord.