Don't use a "pre-made" video or audio cable such as those used for stereo, television and VCR applications for S/PDIF digital transfers. Inexpensive cables are poorly shielded, lossy, and require the use of adapters to convert the video "F" connectors to audio ends.
HOSA makes a "pre-made" cable that I have had good results with. I use model DRA-503. They are very well shielded, have gold connectors at each end, and are fairly flexible.They are offered in a variety of lengths and audio ends (model numbers vary).
If you want to make your own cables, a suitable cable for S/PDIF digital transfers is RG-6QS Quad Shield 75 ohm cable. You will need to purchase end connectors. I would NOT suggest using the " solderless" type of plugs.
If you need to have something in a hurry or can't get higher quality parts you can use the following in a clip:
Radio Shack 278-1317 BULK RG-6QS cable,
Radio shack 274-850 Phono plug,
Radio shack 274-855 1/4" phone plug.
Use the highest quality components you can get your hands on. Belden makes high quality cable and Switchcraft and Neutrik make good ends.
Nick G.
1997/12