How to keep an up to date JSON file of all metadata in my library?

[vkostas]

I it not possible to export a separate (json) file per file.
Per directory it is feasible for sure.
Maybe the JSON extract combines all json files per directory and then you split them (you can surely automate it). Or have a look at splitter thread below.

Mp3tag Export Splitter

Mp3tag Export Splitter originally from here I created a little assistant tool for Mp3tag to overcome some limitions of the export feature. It's only possible to either create one big file or one file per folder. But not for example one export file for each audio file. So how does it work? You have to use one of the export templates (.mte) with the Mp3tag export. That will create one big file in the windows temp folder. To install the .mte files they must be copied in the Mp3tag profile fo…