"upmixing" is a swear word. It consists of trying to extract 5 independent variables from two. Simply put, algebra is still right, you can't get 5 independent variables from two.My apologies sir, had no idea it was a grave insult to call Mix3-ing 2 channels into 5-7 upmixing! Nor did I see anything on site saying its not upmixing. Sorry, I'll reread the whole thing a few more times. I in fact watched the tutorial video, etc, but am still not clear on how to "add" channels to the rear, etc. The 2ch file I uploaded, "widened" the front 2 channels, then downloaded as "5 ch speakers", indeed grew by about 4x original size (48k sampling), so something definitely happened there. However, I'm at a complete loss as to how this "5.0 channel" WAV is to be played back in 5ch. Couldn't find anything in tutorial for this. Maybe some members here might try it themselves, see if they have better luck than myself. Thanks again, fascinating stuff you're doing there for live music (especially jazz and classical) lovers like myself.
You can change what you render to to a number of formats, you may want to check various menus. The setup was intended for people used to digital production tools, but I still find it somewhat impenetrable myself.