Great guide

thanks. Hopefully there'll be a "cleaner" solution eventually... VoodooHDA is looking promising.
Quote:
Originally Posted by Dies
a.) It didn't work at all, no matter what, sound would only go to one output, the first one listed in the aggregate device.
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this is what happens when playing stereo, os x doesn't have an integrated speaker fill option, sound is only passed to the correct discrete channel specified in the source media. did you try something such as a video file with ac3 5.1 audio, with perian set to multi-channel output? also, apple dvd player with output 5.1 thru spdif (digital out) ONLY

have to use VLC for multi-channel instead.
Quote:
Originally Posted by Dies
b.) Since I have no software volume control for digital out, that meant even if the aggregate device did work I would have no software volume control for the device. 
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it's normal for a spdif output not to have a software volume control isn't it? because the outputs aren't being handled in software, simply being passed-thru digitally.
I use 3 line-outs as an aggregate for 5.1, and still get no volume control (ALC888) i think this is a limitation of the aggregate devices.
But I came up with a little fix & i guess anyone else with this problem can use these steps to try to force software volume control:
1) Make sure each output you intend to use is set to full volume in sound preferences.
2) Set the aggregate device up as usual & assign speakers in Audio midi setup.
3) Using Soundflowerbed, set the 6 channels of the aggregate device to the first 6 of Soundflower16ch.
4) Select Soundflower16ch as default output & configure speakers for multichannel output in Audio midi setup.
5) Software volume control for your 5.1 enabled system
hope this helps someone...