Not quite sure i know what you mean about the FP audio connection.
The board has a fp audio header.
Unless your case doesn't have a HD/ac97 lead i get it.
The case has a FP audio connection with a female HD and ac97 connector. My mobo/onboard audio has no port to plug the HD audio into though... The SupremeFX card has an HD male port on it so I could plug the FP audio to that.
Hope that helps, here is a pic of the sound card btw: http://www.motherboards.org/images/reviews/motherboards/1706_p5_9.jpg