I often use export tracklist functionality, especially when adding releases to music databases on the internet.
And every time this looks like this:
- load album
- select all files
- export using predefined settings (format) to temporary file
- open file with mp3tag prompt
- copy content to the website
- remove temporary file
Export content directly to the clipboard instead of file at the disk would be a neat feature in this scenario. And it might be quite easy one to add to the mp3tag 