Encoded as 5.1 rather than 6 tracks. I would have to have another look but probably 5.1 dts. It is rather difficult to find any software that will compile multiple audio into a multichannel video file unless it is surround sound. If you have any suggestions for this (besides QT7 which I don’t think is viable anymore).
Best wishes
Russell
@bonemap when you say 5.1 encoded audio, is it just a video file with 6 discrete audio tracks? Or is it an encoded format like Dolby or dts?
I just looked at an issue with a BlackMagic device (Video Assist 12G) tethered to my computer with HDMI. I could send 5.1 encoded audio directly from the Movie Player module in Isadora to the BMD VA12G recorder via HDMI (labelled BMD HDMI), and it showed all six channels active through the device's VU meters. However, trying to monitor or separate the six channels as a mix with the Movie Player was a disaster. I think the multichannel routing capability of the Movie Player is currently dysfunctional. Unless someone can shed some light on this?
Best Wishes
Russell
@xlrstik do you see the 8 audio outputs of the Blackmagic converter in your audio midi setup (I am assuming you are on osx).
Aggregate outputs should be transparent to any software once they are configured.
I just like to second this! Coming from party/live visuals, going to commercial and musical productions, but also Opera and fine Art festivals and now at municipal theatre.
I have experience with all of them (disguise, Watchout, Wings, Pandoras, milllumin, Touchdesigner and Resolume (starting with 3.x , back in the days and moving to Izzy shortly after, because of limited layers 
). Non of them have the combined balance of usability, lerning curve and 'give it to the client's hands' probability, as Isadora does! Call it scalability. The price/needed feature combination is far off anyways.
We now are running Wings successor Pixera and I so often miss the scene functionality and the logic possibiltys, beside alot of other issues :D.
The only real missing functionality, which is holding back the switch, are the frame synced multi server/device distribution and the somewhat oldschool GUI (which is just a psychological issue 
).
For most commercial users, probably is the missing hardware complete system solutions + (official) service.
It´s a aggregated output i need - en soundcard with 4 out and 1 blackmagic hdmi to SDI converter with 8 out. I will look into Blackhole option - Thanks
Check out this thread: https://community.troikatronix.com/topic/6752/sound-routing-software
Also, if I understand correctly, what you want is a multi-output device, not an aggregate audio device.
i get good results using Blackhole on Mac OS. It's a bit fiddly to get it installed, but you can set up Aggregate and Multi-output settings in AudioMidi Setup prefs.
Once this is done, Isadora will see these as outputs and you can send separate signals from each movie or audio player.
Other people can give better tech. advice than me, but this is my experience.
The link below also offers a Windows-based alternative, which I haven't tried:
@dillthekraut Thank a lot ! That would have been what I would have done (more or less) but I was in a production so I didn't have time and resources to test it in that way. I'll definitely look into it and report it here as soon as I can. Interesting case
@mark_m Ahah same thing happening to me ! As I'm trying to push more and more of our live events over to Isadora (We mostly use Watchout and/or Disguise on larger productions) but for most corporate gigs, of all sizes, I would say 95% of them would be abundantly well-served with Isadora. But the last standing blockade is always the redundancy. Now @Woland created this ingenious way for me to solidly implement Isadora as a totally viable, relevant solution throughout our operations.