I may be confused a bit, but as far as I know, there are no cables specific to the audio type, those are just codecs and processing, the audio goes out to the same cable.
There is a digital audio cable that you can hook up to a CD/DVD drive and such, are you talking about that? Or the headers for the motherboard to the case?
You may be better off just getting a sound card if you have issues with audio on the motherboard.