I'm about to install a new AV receiver (Yamaha HTR6063B) and a new television (Sony 46" LED KDL46EX713), and I've also purchased a ASUS Radeon EAH5450 for allowing the HTPC to provide HDMI out. However, I've just come to realize (via AVS forums) that Windows XP doesn't provide the means for outputting an appropriate audio stream intended for decoding into multiple channels (e.g., bitstreaming for Dolby 5.1 decoding). Because I'd like to use MC15 for playing DVDs, this begs the following questions ...
(1) Is the S/PDIF optical output from my computer to the AVR a viable alternative to HDMI for bitstreaming?
(2) If so, is there a special configuration for MC15 for allowing this to work? (I'll have to post another msg to AVS for best configuring the AVR)
(3) Does anyone foresee problems I haven't yet anticipated?
BTW ... I'm still waiting for the Radeon card, so it'll likely be a week for I get my hands dirty (oh, but what a fun weekend that'll be ...<g>...)
TIA
Edit: I have been able to find out that XP doesn't support the bandwidth required for the decoding of 48/24 and 96/24 PCM encoded bitstreams, while Windows 7 does. What I haven't yet been able to find out is the difference that I'm likely to see or hear. That is, from what I gather, 48/24 bitstreams will be down-sampled to 48/16 ... but what problems will that cause? Will some PCM data survive for decoding by the AVR (eg, Dolby5.1), while more advanced PCMs may not (eg, Dolby Digital EX)?
Anyone? ...