Gigabyte 7NF-RZ Front Audio

Hi I have just bought a new case and i am having trouble hooking up
the front audio ad the pins provided with the case don't match the
names in the motherboard manual

here is the motherboard pin settings

1.MIC
2.GND
3.MIC_BIAS
4.POWER
5.FRONT AUDIO (R)
6.REAR AUDIO (R)
7.RESERVED
8.NO PIN
9.FRONT AUDIO (L)
10.REAR AUDIO (L)

And these are the pins that came with the case

MIC IN
MIC POWER
GROUND
GROUND
R-OUT
L-OUT
R-RET
L-RET

Any help you can give is appreciated

Cheers.