Hey Guys, I was doing sounds one by one while thinking about writing a small macro, seems it did work fine. Stereo to mono in Audacity. ZIP DOWNLOAD (GDRIVE) Inside the zip is my empty project, follow the HOWTO.jpg > batch export audio files will be inside the macro-output folder .. Took me 2 seconds for 75 mb with 59 files. On the official Discord, Devin added below me: For anyone who's ever used ffmpeg, you can also do for i in *.wav; do ffmpeg -i "$i" -ac 1 "new/${i%.*}.wav"; done which downmixes that folder's wav files to mono in batch. Takes about a second for some 50MB worth of audio files