tag_audio: skip dirs which are probably not albums

.config/zsh/functions/tag_audio

@@ -9,6 +9,12 @@ function _tag_audio_extra_tags() {
 }
 
 for dir in ${@}; do
+    [[ -d ${dir} ]] || continue
+    if [[ "${dir}" == "singles" ]] || [[ "${dir}" == "misc" ]]; then
+        print -Pu2 "%B%F{yellow}skipping ${dir}%f%b"
+        continue
+    fi
+
     picard ${dir}
     mksmol ${dir}