Just some thoughts ....
A playlist file is in general a text file, which contains filepathnames of files to be played, ...
where the position of the filepathname within the entire list determines the moment when the filepathname should be invoked to be played.
An audio file which is member of a playlist does not need to have its own tracknumber, ...
also it does not need to get a changed tracknumber, when its position in the playlist will be changed.
The position in time to be played is given by the textual order of the filepathnames within the playlist.
That is the advantage of the playlist, because there is no need to change any tag-data within a playlist member file, therefore the tracknumber of the file's original parent file set can be left untouched, respectively there are no distinct tracknumbers needed at all.
Within the Mp3tag listview you can move a single file entry or a selected group of file entries up or down in the listview to place the selection anywhere in the listview.
- Alt + Drag'n'Drop Change order of files in list of files.
- Alt + Arrow down Change order of files in list of files.
- Alt + Arrow up Change order of files in list of files.
- Alt + Page down Move selected files to end in list of files.
- Alt + Page up Move selected files to beginning in list of files.
Based on the current arrangement of filenames you can create an everlasting playlist file.
- Now to your problem.
You have a set of files, collected within a playlist, where you have set the tracknumber within each file to the positon number of the file within the playlist.
This looks like a fixed compilation set of files on a CD, where each file has its dedicated place within the set of files on the data media (... therefore a playlist file is not needed, because the tracknumber determines the order!).
For filenames like ... "podcastAyyyymmdd" ... there has something going wrong, maybe because of the order of the download date of the files (file modified or creation date on the data storage), which differs from the date string within the filename.
There should be some options to clear the situation, but this depends on the amount of files to be touched, treating 3 files or 30 files or 300 files.
How did you do this within Mp3tag?
I have created a column in the Mp3tag list view this way:
Name: File Mod DT
Sort by: %_file_mod_datetime_raw%
- A possible workflow how to solve your problem.
Sort the files by tracknumber.
Put the focus on "podcastA" files:
Filter: "%_filename%" HAS "podcastA"
Save tracknumbers to text file:
Create an export script, which outputs only the tracknumbers to text file ...
e. g. output filename: T:\TEST\20151128.hypershock\Tracknumbers.txt
Example for export script (only one line) ...
Note: $loop(1) is a trick to do not sort the files by some tag-field content, but use the files in the order as is within Mp3tag listview.
Sort filtered list by filename ...
... and select the files.
Set TRACK with tracknumbers from text file.
Convert "Text file - Tag"
"T:\TEST\20151128.hypershock\podcastA20150430.mp3" -> TRACK: 3
"T:\TEST\20151128.hypershock\podcastA20150502.mp3" -> TRACK: 8
"T:\TEST\20151128.hypershock\podcastA20150504.mp3" -> TRACK: 11
Apply the change when ok.
Close the Filter.
Sort by TRACK.