I have a bunch of midi files that I would like to convert to audio files through some kind of scripting on OS X. When searching for ways to do this,
fluidsynth comes up time and
Timidity are two terminal programs that comes up time and time again.
This is nice and all, but both these programs utilizes SoundFonts to generate the output, something that gets the job done but in all honesty doesn't make the final result sound especially good, especially when you compare it to what you can create by using something so relatively simple as Logic Pro X along with the default plug-ins (for example, the best sound font piano available still sounds dramatically worse than the default piano sound in Garageband).
Hence, my question is if there are some ways of batch creating audio files from midi files that utilizes the possibilities that my computer actually has to create high quality output?