for f in ./**/*.wav; do ffmpeg -y -i "$f" -c:a libmp3lame -ac 1 -q:a 2 -b:a 96k "${f/%wav/mp3}"; done
for f in ./**/*.mp3; do ffmpeg -y -i "$f" -acodec pcm_u8 -ar 22050 "${f/%.mp3/-1.WAV}"; done
for f in ./**/*.wav; do ffmpeg -y -i "$f" -c:a libmp3lame -ac 1 -q:a 2 -b:a 96k "${f/%wav/mp3}"; done
for f in ./**/*.mp3; do ffmpeg -y -i "$f" -acodec pcm_u8 -ar 22050 "${f/%.mp3/-1.WAV}"; done