What Is Thing Called Love mix + master

[Mike Senior]

But I have a problem: in my D.A.W. (I use Audacity (free), with free plug-ins, pretty cheap active monitors and a Line6 interface as a sound card (I also record, that is how I got into mixing) ) I cannot undo previous 'effects' or 'processions' except if I didn't close my project after the 'effect' I want to change and if you undo an 'effect' you lose all the 'effects' you added after the undone effect.

I think you need to switch to Reaper. You can try it out for free, and the non-commercial licence is only $60. I use it now for almost all my mixes.