Merge pull request #192 from bensaufley/fix/single_cover_art

Attempt to fix missing cover art for single output

AAXtoMP3

@@ -960,6 +960,11 @@ do
     fi
   fi
 
+  if [ -f "${cover_file}" ]; then
+    log "Adding cover art"
+    mp4art --add "${cover_file}" "${output_file}"
+  fi
+
   # -----
   # Announce that we have completed the transcode
   if [ "$((${loglevel} > 0))" == "1" ]; then