Generate and store an audio file with minim from multiple sources

fedegl

I have a processing sketch where I have music playing in the background throughout the whole sketch and then occasionally other files are played as well, like voice and other sounds. All the sounds are loaded with the minim loadFile method.

I would like to generate an audio file with the sound of the combined audio files played during the sketch. I have read the AudioRecorder documentation but you can only specify 1 source file.

Is there another way with minim or with other libraries to generate this combined audio file?

Thanks!