I've placed my order for the DD-5.1 and have stumbled upon a slight conundrum. I don't watch movies using a software DVD decoder, I use a REALmagic Hollywood Plus decoder card, which has two audio outputs (1/8" stereo and S/P DIF). Up until now I've been connecting the decoder's stereo out to the line-in on my Audigy Platinum Ex, getting 4 speaker surround via Pro Logic, which leaves my ProMedia 5.1's with a center channel speaker that's been doing a great job of keeping a portion of the top of my monitor dust free. I've tried (to no avail) connecting the decoder's S/P DIF Out to the Audigy's S/P DIF in, then enabling AC-3 decode in both the Surround Mixer and in AudioHQ - Device Controls. There was sound, but the sound of my eyes blinking drowned it out. This is with the new drivers, by the way. I have two choices, I think, for making this work... 1. Connect decoder's S/P DIF to the Audigy's S/P DIF In, then connect the Audigy to the DD-5.1 using either the S/P DIF Out on the external drive, or by using the seemingly tried and true 1/8" mono-to-RCA, this connection would rely on using the Audigy's S/P DIF Bypass setting to get the AC-3/DTS signal from the decoder. 2. Connect decoder's S/P DIF directly to the DD-5.1, then connect the Audigy's Optical Out directly to the DD-5.1. The 2nd connection guarantees Dolby Digital/DTS from DVDs. Any suggestions?