Enable Terratec S/PDIF with Windows 7

Our main screen machine is pretty old! Built back at the end of 2006 I've upgraded it several times. At some point we purchased a Terratec Aureon 5.1 sound card to output S/PDIF to the amp.

During the upgrade to windows 7 this proved to be a significant problem as the Terratec drivers simply don't support S/PDIF output.

Fortunately cmediadrivers came to the rescue. These are distinctly hard to get working on windows 7 since they aren't signed by Microsoft. This means you need to run windows in test mode and use the Driver Signature Enforcement Overrider to sign the driver so it actually works. However, putting all this together enables digital output.