To the other user, i must say i was in the same situation than you, and there IS NONE soundcard or anything that do 5.1 or DTS, the only choise you have is one: optical out from the optical out in the mac pro, in this area PCs are A LOT ahead from apple...
Good Luck!
Not entirely true... you can also connect via firewire to an external sound device. There are lots of them.
sorry to be off topic, but to answer the above:Hey xgman, can i ask you something? how you compare the 2010 mac pro with the 2008??? in speed did you notice the speed bump?
Your best bets would be:
A. Output to a powered 5.1 speaker system that accepts an optical connection.
B. Output to a 5.1 receiver (with attached speakers) over optical.
sorry to be off topic, but to answer the above:
Boot time, or time to select which drive (via holding opt key down, increased significantly on the 2010. Other than that it is faster on the memory side, because of the throughput and faster mem speed which I do notice, but the 2008 was already 3.2 ghz and this one at 3.3 is basically the same. I do not miss the extra two cores though. Probably not with the upgrade as such, but I needed a new MP anyway and kept both. Actually the most bang for the buck was swaping a Western Digital Black drive for an OCZ Vertex 2 SSD. that you immediately see a speed difference.
Your best bets would be:
A. Output to a powered 5.1 speaker system that accepts an optical connection.
B. Output to a 5.1 receiver (with attached speakers) over optical.
There's really not a lot of traditional sound card options for Macs outside of the professional stuff, which wouldn't exactly do what you're expecting anyway.
So I am running an HDMI cable from my Mac Pro to my Blu Ray and then HDMI to my television and I can get great video and stereo audio. My bluRay when playing a dvd or from my ipod or from a bluRAY disc allows me to use the different soundfield modes. No such luck from my Mac pro through the HDMI (i guess thats cause it doesn't support 5.1??). BUT when i connected the optical out i WAS able to use all the fancy soundfield modes. The problem with this is that I now am forced to run the video straight to the tv through the HDMI port on the tv. The weird thing is that now the hdmi video drops out every few seconds.
RECAP
HDMI from Mac pro to blu ray, great graphics mediocre sound.
optical form Mac pro to blue great audio (no video)
HDMI straight from MAC pro to tv (because of optical to blue ray). Terrible video
WTF?????
No idea why your video to the TV is dropping, but have you tried exploring the features of your BluRay player to see if it can accept hdmi video input and separate audio input? I use a Denon 3808ci av receiver, and it has this option under hdmi set up, so I assign one of the hdmi ports to v.aux with separate audio, and one of the optical ports to v.aux, then connect my MBP using hdmi and optical, and no problems at all with video or sound. I realize that your BluRay player probably wasn't intended to perform switching, but its worth reading the manual to see if the separate audio input feature is there.
Yeah i tried that but unfortunately that is not possible. the problem is i don't even know who to contact with this problem? Not mac of course cause its not "really" supposed to be HDMI compatible. not the TV because all other hdmi inputs work, and not the blu ray guys cause the problem doesn't seem to be there..... ?
i wish everything was actually as easy as mac claims it to be...
Well as near as I can tell (and I am not 100 percent here) I seem to be getting 5.1 through the optical output.My gut feeling is that the generic monitor driver on the mac isn't compatible with your tv. Like you said, neither Apple nor the tv manufacturer will take responsibility for the problem.
Suggest you post over in the AVS forums. Smarter people than I hang out over there and will see your post and respond.
In the mean time, I'm curious if you're getting 5.1 audio from your mac through your bluray, and if so, what settings you use on the mac to get it to send a 5.1 audio signal? (See my first post above.)
Well as near as I can tell (and I am not 100 percent here) I seem to be getting 5.1 through the optical output.
My sole test for this however is the fact that i can use the dolby features on my blu ray. they don't work through the hdmi. now i can get full surround.
Also forgive me, but what is AVS? I went over to the Digital audio section and couldn't find a good topic. Was that the place that you meant?
Are the Dolby features enabled automatically when you plug in your optical cable to your Mac, or do you have to muck around with any settings to enable them?
http://www.avsforum.com/avs-vb/
If I were you I would browse the Home Theater PC section (they have a Mac subsection) as well as look up the thread corresponding to your model TV. You could post in both places.