Any one have one installed? If so, what brand? Looking to get one for my system. Could use some opinions...

thanks

I after a cheap card from ebuyer with optical out died I replaced it with this card Terratec Aureon 5.1 PCI Sound Card http://www.scan.co.uk/Products/ProductInfo.asp?WebProductID=176635
Seems to work fine with R5F1 and enabling the optical out in alsamixer.
Workes a treat. I'm getting 2.1 from the DVB-T channels (upmixed through my Logitech z-5500's to 5.1) and proper dts/Dolby digital from dvds and other 5.1 media.
I'm in the UK btw. I think Terratec are a German brand.

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Version:R8
Intel C2D 7400, Nvidia 5600 via HDMI to Samsung B37B650TW (PAL), Asus P5QL-E mobo, 4Gb PC6400 DDR2 ram, Samsung Spinpoint 500 Gb & 1Tb drive, Nova-HD-S2 (x2)

The Dragon uses the Chaintech AV-710 - http://mythic.tv/system_specs.php

how do you enable it in alsa mixer?

Alt-X brings up a console.
type su (password) puts you in super user.
type alsamixer.
Off the top of my head I can't remember which channel/option you need to unmute the optical out, but find it and press M to unmute it.
Due to a bug, alsamixer settings don't save on reboot. There is a simple fix, check the upgrade hints and tips thread for R5F1 by tjc. If memory serves it's listed there.

_________________
Version:R8
Intel C2D 7400, Nvidia 5600 via HDMI to Samsung B37B650TW (PAL), Asus P5QL-E mobo, 4Gb PC6400 DDR2 ram, Samsung Spinpoint 500 Gb & 1Tb drive, Nova-HD-S2 (x2)