Well, I reply to myself, got this so far ...
Mp3tag Tag Dump Row
$filename(Mp3tag.tagdump.row.txt,ANSI)$loop(%_path%)^|_MD5AUDIO:''%_md5audio%''|_MD5:''%_md5%''|_PATH:''%_path%''|$regexp($list(,:'',''|),\r\n,U+000DU+000A)$$$char(13)$char(10)$loopend()
Mp3tag Tag Dump Col
$filename(Mp3tag.tagdump.col.txt,ANSI)$loop(%_path%)^
_MD5AUDIO:''%_md5audio%''
_MD5:''%_md5%''
_PATH:''%_path%''
$regexp($regexp($list(,:'',''$char(13)_$char(10)),\r\n,U+000DU+000A),\r_\n,\r\n)$$
$loopend()
... first steps to support development of a handy backup/restore environment for Mp3tag?
DD.20070304.2342