metadata scripts

rank from list: remove turtledemo and add grouping name as argument
metadata scan: scan grouping of all files
metadata search replace: add working dir as argument

quiethost/metadata_search_replace.sh

@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 
-find . \( -iname '*.mp3' -o -iname '*.m4a' -o -iname '*.m4b' \) -print0 |
+root="${1:-.}"
+find "$root" \( -iname '*.mp3' -o -iname '*.m4a' -o -iname '*.m4b' \) -print0 |
 while IFS= read -r -d '' f; do
 
     comment=$(ffprobe -v error \