I too am having audio problems hooking up the Top Panel audio.
I have an ASUS P4C800-E Deluxe motherboard
It says it is a 10-1 pin FP_Audio connector.
The Front panel pins are as follows;
Top Row Left to Right: AGND, +5VA, BLINE_OUT_R, EMPTY, BLINE_OUT_L
Bottom Row left to Right: MIC2, MICPWR, Line out_R, NC, Line out_L
Pins BLINE_OUT_R nad Line out_R are shorted with a jumper,
along with BlINE_OUT_L and Line out_L
The manual says Remove Jumpers only when you are connecting the front Panel Cable
Any idea how to hook this up? My main concern is the Mic connection.