I am using Logitech 5.1 speakers connected to my PC which has built in 5.1 Audio on the motherboard.

What I am wanting to do is also connect mysky HDi audio to the PC via SPDIF and allow it to pass through to 5.1 Audio output, rather than just having 2 channel audio.

Can this be done?

I have a Asus P5LD2 Deluxe motherboard, not sure if I need to buy another PCI soundcard to achieve this, or if this motherboard has the input on the motherboard itself.