Need to resort to something like autoconf to really support all these platforms. Everyone who adds sound hardware to a computer has the urge to come up with their own file format. I don't know DSP at all. A Pitch Shifter is high on the list. Someone needs to add this in.
Some file formats have space for embedded comments.
These are currently thrown away. Printing them out, carrying them forward, and an to add new ones would be handy. Static placement would work as a SOX effect loop, but dynamic placement involves some scripting feature, or joystick input etc. It wants to be class-based. It wants to have a scripting control language.