I'll try to describe........
When you run an export, the info it exports is only that which is shown in the mp3tag window.
Is it possible to specify (in the script) a directory from which to get the tag data from? Similar to the $filename placeholder for writing the file. If it was then I could run an export without having to change directories.
Then hopefully Florian will make batch exporting in a future build and I'll be laughing