I just thought I would report back my findings on my DTS issue.
It turns out I was using the Gold Purevideo product, so it would not software decode DTS (I expected this). However it ALSO disabled DTS on SPDIF.
I upgraded the activation key to the Platinum key on the same Purevideo installation file, and now have software DTS decode AND DTS SPDIF pass-through.
My conclusion is the product type restrictions (bronze/gold/platinum) are applied to software decoding and SPDIF pass-through.
It turns out I was using the Gold Purevideo product, so it would not software decode DTS (I expected this). However it ALSO disabled DTS on SPDIF.
I upgraded the activation key to the Platinum key on the same Purevideo installation file, and now have software DTS decode AND DTS SPDIF pass-through.
My conclusion is the product type restrictions (bronze/gold/platinum) are applied to software decoding and SPDIF pass-through.
[SIZE="1"]AMD Athlon X2 4200+ CPU, Gigabyte GA-MA770-DS3 mobo, 2GB RAM, 1TB SATA HDD, DigitalNow Dual Hybrid PCIE S2 and Hauppauge HVR2200 capture, ATI HD4670 video with HDMI-HDMI to 32" LCD TV at 1360x768, Win7 Home Premium 64bit, GBPVR 1.4.7, EVR renderer[/SIZE]