A toggle for Mono export was programed in the song export dialogue. It is very convenient, compared to what I had to do to export in mono before now.
I would like to see the same toggle added to the Project Digital Release dialogue.
Currently there is no way to export from the project page in Mono at all. It will only release in Stereo, and I often cannot use Stereo files for my Audiobook recording work.
This means I have to export each file separately. I have the SO4 Professional specifically so I can process many hours of audio automatically. Without the option to release in Mono, the project page is rendered near-useless for me in many cases.