mp3cat caused trouble with sorting, e.g. 100 after 10, not after 99

.config/scripts/mp3cat_all_subdirs.sh

@@ -4,7 +4,10 @@ for d in ./*; do
         f=${d:2}
         cd "$d"
         echo ${f}.mp3
-        mp3cat -c 1 ./*.mp3 -o "${f}.mp3"
+        # find all mp3s, sort them (e.g. 100 after 99, not after 10),
+        # get only filenames, handle spaces, and pass list to mp3cat
+        find  . -iname "*.mp3" -exec basename {} \; | sort -h | xargs -d '\n' mp3cat -c 1 -o "${f}.mp3"
+#        mp3cat -c 1 ./*.mp3 -o "${f}.mp3"
         mv "${f}.mp3" ../
         cd ..
     fi