Earphones Issue

Hello my problem is that I have just purchase a new Ion DJ mixer and it included MixVible Cross Discover DJ 1.3.2.
I am trying to connect my earphones but not able to cue my songs, when I go to the Audio options and select my Primary Sound Driver the only options I get are the following Output 1 Left/Right, Routing Mode: Simple Stereo and for the Sound Card Output 1 Right for Master and the same for the Cue option.
My Laptop is an Acer 6920 CPU Intel Core 2 T5750 2Ghz 4GB of Ram Windows 7 64-bit and my Sound card is a Realtek version R2.51 I have 2 output one is for the earphones jack and the other is for the Digital High definition S/PDIF
Please help with my problem
I am trying to connect my earphones but not able to cue my songs, when I go to the Audio options and select my Primary Sound Driver the only options I get are the following Output 1 Left/Right, Routing Mode: Simple Stereo and for the Sound Card Output 1 Right for Master and the same for the Cue option.
My Laptop is an Acer 6920 CPU Intel Core 2 T5750 2Ghz 4GB of Ram Windows 7 64-bit and my Sound card is a Realtek version R2.51 I have 2 output one is for the earphones jack and the other is for the Digital High definition S/PDIF
Please help with my problem