What I’d like to do is find a way to automatically attach an mp3 file to the beginning of another mp3 file in a different folder, and export as a finished mp3. This can be done manually but there are hundreds of files. They’re all in the correct order. How would does one automate as much of this as possible? Is it possible using just Audacity?
The standard tools in Audacity do not support batch processing across multiple folders.
It may be possible to write a Nyquist script (Nyquist is a programming language for audio that is built into Audacity), or you could write a BAT script to run a batch process with SoX. I don’t know of any graphical programs that can do what you want.