Thanks for the feedback (and sorry about my late reply). It's not the first time the idea for multiple sessions is brought up.
However, I think there is a slight misunderstanding here. Are you asking about whether you can use AudioNodes for free? If so, by all means go ahead please, AudioNodes is free for all (including both the web-based version and the desktop version), this includes commercial use (as a sidenote, we are planning to ship a set of convenience features for contributing users with the coming update to better finance development, but stuff that would hard-limit what one can do).
LMK if that answers your question.