accomodate for filenames with e.g.spaces

scripts/reencode_audio.sh

@@ -5,7 +5,7 @@ set -euo pipefail
 dir="$(pwd)"
 dest=${dir%/*}/${dir##*/}_reencode
 if [[ !(-d $dest) ]]; then
-   mkdir $dest
+   mkdir "$dest"
 fi
 
 for file in ./*.$1; do